Finding the Third Proportional to 71,737.88 and 90,959.06

Step by Step Solution

1. Step 1: Write the proportion equation
   71,737.88 : 90,959.06 = 90,959.06 : x
2. Step 2: Convert to fraction form
   71,737.88/90,959.06 = 90,959.06/x
3. Step 3: Cross multiply
   71,737.88x = 90,959.06 × 90,959.06
4. Step 4: Simplify right side
   71,737.88x = 8,273,551,050.88
5. Step 5: Solve for x
   x = 8,273,551,050.88/71,737.88
6. Step 6: Final answer
   x = 115,330.31