Finding the Third Proportional to 90,447.75 and 132,961.78

Step by Step Solution

1. Step 1: Write the proportion equation
   90,447.75 : 132,961.78 = 132,961.78 : x
2. Step 2: Convert to fraction form
   90,447.75/132,961.78 = 132,961.78/x
3. Step 3: Cross multiply
   90,447.75x = 132,961.78 × 132,961.78
4. Step 4: Simplify right side
   90,447.75x = 17,678,835,273.17
5. Step 5: Solve for x
   x = 17,678,835,273.17/90,447.75
6. Step 6: Final answer
   x = 195,459.09