Finding the Third Proportional to 778,781.25 and 1,137,550.50

Step by Step Solution

1. Step 1: Write the proportion equation
   778,781.25 : 1,137,550.50 = 1,137,550.50 : x
2. Step 2: Convert to fraction form
   778,781.25/1,137,550.50 = 1,137,550.50/x
3. Step 3: Cross multiply
   778,781.25x = 1,137,550.50 × 1,137,550.50
4. Step 4: Simplify right side
   778,781.25x = 1,294,021,140,050.25
5. Step 5: Solve for x
   x = 1,294,021,140,050.25/778,781.25
6. Step 6: Final answer
   x = 1,661,597.71