Finding the Third Proportional to 71,320.50 and 99,702

Step by Step Solution

1. Step 1: Write the proportion equation
   71,320.50 : 99,702 = 99,702 : x
2. Step 2: Convert to fraction form
   71,320.50/99,702 = 99,702/x
3. Step 3: Cross multiply
   71,320.50x = 99,702 × 99,702
4. Step 4: Simplify right side
   71,320.50x = 9,940,488,804
5. Step 5: Solve for x
   x = 9,940,488,804/71,320.50
6. Step 6: Final answer
   x = 139,377.72