Finding the Third Proportional to 90,331 and 134,191.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,331 : 134,191.50 = 134,191.50 : x
2. Step 2: Convert to fraction form
   90,331/134,191.50 = 134,191.50/x
3. Step 3: Cross multiply
   90,331x = 134,191.50 × 134,191.50
4. Step 4: Simplify right side
   90,331x = 18,007,358,672.25
5. Step 5: Solve for x
   x = 18,007,358,672.25/90,331
6. Step 6: Final answer
   x = 199,348.60