Finding the Third Proportional to 28,800 and 61,591.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,800 : 61,591.50 = 61,591.50 : x
2. Step 2: Convert to fraction form
   28,800/61,591.50 = 61,591.50/x
3. Step 3: Cross multiply
   28,800x = 61,591.50 × 61,591.50
4. Step 4: Simplify right side
   28,800x = 3,793,512,872.25
5. Step 5: Solve for x
   x = 3,793,512,872.25/28,800
6. Step 6: Final answer
   x = 131,719.20