can anyone help for program calls a method

Question

// Program calls a method that finds and returns
// the median value in an array
// The median value is the middle value from largest to smallest
// If there are an even number of values, the
//median is the mean of the two middle values
using System;
class DebugSeven4
{
   void Main()
   {
      int[] firstArray = {10, 9, 2, 3, 5, 6};
      int[] secondArray = (112, 456, 782);
      int[] thirdArray = {9, 12, 45, 82, 84, 67, 2, 6};
      Console.WriteLine("The median value of the first array is {0}",
         FindMedian(firstArray));
      Console.WriteLine("The median value of the second array is {0}",
         FindMedian(secondArrray));
      Console.WriteLine("The median value of the third array is {0}",
         FindMediam(thirdArray));
   }
   private static double FindMedian(int[] array)
   {
      double median;
      middle = array.Length / 2;
      Array.Sort(array);
      if(array.Length % 2 == 0)
          median = (double)(array[middle - 1] + array[middle]) / 2;
      else
          median = array[mid];
      return median;
   }
}