Finding the Third Proportional to 87,405.50 and 132,290.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,405.50 : 132,290.50 = 132,290.50 : x
2. Step 2: Convert to fraction form
   87,405.50/132,290.50 = 132,290.50/x
3. Step 3: Cross multiply
   87,405.50x = 132,290.50 × 132,290.50
4. Step 4: Simplify right side
   87,405.50x = 17,500,776,390.25
5. Step 5: Solve for x
   x = 17,500,776,390.25/87,405.50
6. Step 6: Final answer
   x = 200,225.12