Finding the Third Proportional to 58,515 and 89,959.50

Step by Step Solution

1. Step 1: Write the proportion equation
   58,515 : 89,959.50 = 89,959.50 : x
2. Step 2: Convert to fraction form
   58,515/89,959.50 = 89,959.50/x
3. Step 3: Cross multiply
   58,515x = 89,959.50 × 89,959.50
4. Step 4: Simplify right side
   58,515x = 8,092,711,640.25
5. Step 5: Solve for x
   x = 8,092,711,640.25/58,515
6. Step 6: Final answer
   x = 138,301.49