Finding the Third Proportional to 90,105 and 129,793.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,105 : 129,793.50 = 129,793.50 : x
2. Step 2: Convert to fraction form
   90,105/129,793.50 = 129,793.50/x
3. Step 3: Cross multiply
   90,105x = 129,793.50 × 129,793.50
4. Step 4: Simplify right side
   90,105x = 16,846,352,642.25
5. Step 5: Solve for x
   x = 16,846,352,642.25/90,105
6. Step 6: Final answer
   x = 186,963.57