Finding the Third Proportional to 132,048 and 285,142.50

Step by Step Solution

1. Step 1: Write the proportion equation
   132,048 : 285,142.50 = 285,142.50 : x
2. Step 2: Convert to fraction form
   132,048/285,142.50 = 285,142.50/x
3. Step 3: Cross multiply
   132,048x = 285,142.50 × 285,142.50
4. Step 4: Simplify right side
   132,048x = 81,306,245,306.25
5. Step 5: Solve for x
   x = 81,306,245,306.25/132,048
6. Step 6: Final answer
   x = 615,732.50