Finding the Third Proportional to 87,778.50 and 132,442.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,778.50 : 132,442.50 = 132,442.50 : x
2. Step 2: Convert to fraction form
   87,778.50/132,442.50 = 132,442.50/x
3. Step 3: Cross multiply
   87,778.50x = 132,442.50 × 132,442.50
4. Step 4: Simplify right side
   87,778.50x = 17,541,015,806.25
5. Step 5: Solve for x
   x = 17,541,015,806.25/87,778.50
6. Step 6: Final answer
   x = 199,832.71