Finding the Third Proportional to 65,560.50 and 99,331.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,560.50 : 99,331.50 = 99,331.50 : x
2. Step 2: Convert to fraction form
   65,560.50/99,331.50 = 99,331.50/x
3. Step 3: Cross multiply
   65,560.50x = 99,331.50 × 99,331.50
4. Step 4: Simplify right side
   65,560.50x = 9,866,746,892.25
5. Step 5: Solve for x
   x = 9,866,746,892.25/65,560.50
6. Step 6: Final answer
   x = 150,498.35