Finding the Third Proportional to 500,418 and 774,562.50

Step by Step Solution

1. Step 1: Write the proportion equation
   500,418 : 774,562.50 = 774,562.50 : x
2. Step 2: Convert to fraction form
   500,418/774,562.50 = 774,562.50/x
3. Step 3: Cross multiply
   500,418x = 774,562.50 × 774,562.50
4. Step 4: Simplify right side
   500,418x = 599,947,066,406.25
5. Step 5: Solve for x
   x = 599,947,066,406.25/500,418
6. Step 6: Final answer
   x = 1,198,891.86