Finding the Third Proportional to 71,314.50 and 99,711

Step by Step Solution

1. Step 1: Write the proportion equation
   71,314.50 : 99,711 = 99,711 : x
2. Step 2: Convert to fraction form
   71,314.50/99,711 = 99,711/x
3. Step 3: Cross multiply
   71,314.50x = 99,711 × 99,711
4. Step 4: Simplify right side
   71,314.50x = 9,942,283,521
5. Step 5: Solve for x
   x = 9,942,283,521/71,314.50
6. Step 6: Final answer
   x = 139,414.61