Finding the Third Proportional to 90,419 and 133,785.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,419 : 133,785.50 = 133,785.50 : x
2. Step 2: Convert to fraction form
   90,419/133,785.50 = 133,785.50/x
3. Step 3: Cross multiply
   90,419x = 133,785.50 × 133,785.50
4. Step 4: Simplify right side
   90,419x = 17,898,560,010.25
5. Step 5: Solve for x
   x = 17,898,560,010.25/90,419
6. Step 6: Final answer
   x = 197,951.32