Finding the Third Proportional to 88,129.50 and 132,390

Step by Step Solution

1. Step 1: Write the proportion equation
   88,129.50 : 132,390 = 132,390 : x
2. Step 2: Convert to fraction form
   88,129.50/132,390 = 132,390/x
3. Step 3: Cross multiply
   88,129.50x = 132,390 × 132,390
4. Step 4: Simplify right side
   88,129.50x = 17,527,112,100
5. Step 5: Solve for x
   x = 17,527,112,100/88,129.50
6. Step 6: Final answer
   x = 198,879.06