Finding the Third Proportional to 90,787.50 and 141,039

Step by Step Solution

1. Step 1: Write the proportion equation
   90,787.50 : 141,039 = 141,039 : x
2. Step 2: Convert to fraction form
   90,787.50/141,039 = 141,039/x
3. Step 3: Cross multiply
   90,787.50x = 141,039 × 141,039
4. Step 4: Simplify right side
   90,787.50x = 19,891,999,521
5. Step 5: Solve for x
   x = 19,891,999,521/90,787.50
6. Step 6: Final answer
   x = 219,105.05