sort numbers

using System;

namespace whileloop
{
    class Program
    {
        static void Main()
        {
            double number1 = double.Parse(Console.ReadLine());
            double number2 = double.Parse(Console.ReadLine());
            double number3 = double.Parse(Console.ReadLine());

            double firstNum = 0;
            double secondNum = 0;
            double thirdNum = 0;

            if (number1 >= number2 && number1 >= number3)
            {
                firstNum = number1;
                Console.WriteLine(firstNum);

                if (number2 >= number3)
                {
                    secondNum = number2;
                    thirdNum = number3;
                    Console.WriteLine(secondNum);
                    Console.WriteLine(thirdNum);
                }
                else
                {
                    secondNum = number3;
                    thirdNum = number2;
                    Console.WriteLine(secondNum);
                    Console.WriteLine(thirdNum);

                }

            }

            if (number2 >= number1 && number2 >= number3)
            {
                firstNum = number2;
                Console.WriteLine(firstNum);

                if (number3 >= number1)
                {
                    secondNum = number3;
                    thirdNum = number1;
                    Console.WriteLine(secondNum);
                    Console.WriteLine(thirdNum);
                }
                else
                {
                    secondNum = number1;
                    thirdNum = number3;
                    Console.WriteLine(secondNum);
                    Console.WriteLine(thirdNum);

                }
            }

            if (number3 >= number2 && number3 >= number1)
            {
                firstNum = number3;
                Console.WriteLine(firstNum);

                if (number2 >= number1)
                {
                    secondNum = number2;
                    thirdNum = number1;
                    Console.WriteLine(secondNum);
                    Console.WriteLine(thirdNum);
                }
                else
                {
                    secondNum = number1;
                    thirdNum = number2;
                    Console.WriteLine(secondNum);
                    Console.WriteLine(thirdNum);

                }

            }

        }
    }
}