Finding the Third Proportional to 120,432 and 169,445.50

Step by Step Solution

1. Step 1: Write the proportion equation
   120,432 : 169,445.50 = 169,445.50 : x
2. Step 2: Convert to fraction form
   120,432/169,445.50 = 169,445.50/x
3. Step 3: Cross multiply
   120,432x = 169,445.50 × 169,445.50
4. Step 4: Simplify right side
   120,432x = 28,711,777,470.25
5. Step 5: Solve for x
   x = 28,711,777,470.25/120,432
6. Step 6: Final answer
   x = 238,406.55