The Biggest of 3 Numbers

//  Write a program that finds the biggest of three numbers.
using System;
using System.Linq;

class TheBigNumber
{
    static void Main()
    {
        Console.WriteLine("Enter three numbers");
        double[] numbers = new double[3];
        char symb = 'a';

        for (int i = 0; i < 3; i++)
        {
            symb = Convert.ToChar(97 + i);
            Console.Write("Enter {0}:\t", symb);
            numbers[i] = double.Parse(Console.ReadLine());
        }

        double maxValue = numbers.Max();
        int maxIndex = numbers.ToList().IndexOf(maxValue);
        symb = Convert.ToChar(97 + maxIndex);
        Console.WriteLine("\r\nBiggest number is   {0} = {1} \r\n", symb, maxValue);
    }
}