Finding the Third Proportional to 71,282.75 and 99,655.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,282.75 : 99,655.50 = 99,655.50 : x
2. Step 2: Convert to fraction form
   71,282.75/99,655.50 = 99,655.50/x
3. Step 3: Cross multiply
   71,282.75x = 99,655.50 × 99,655.50
4. Step 4: Simplify right side
   71,282.75x = 9,931,218,680.25
5. Step 5: Solve for x
   x = 9,931,218,680.25/71,282.75
6. Step 6: Final answer
   x = 139,321.49