Finding the Third Proportional to 87,358.50 and 131,758.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,358.50 : 131,758.50 = 131,758.50 : x
2. Step 2: Convert to fraction form
   87,358.50/131,758.50 = 131,758.50/x
3. Step 3: Cross multiply
   87,358.50x = 131,758.50 × 131,758.50
4. Step 4: Simplify right side
   87,358.50x = 17,360,302,322.25
5. Step 5: Solve for x
   x = 17,360,302,322.25/87,358.50
6. Step 6: Final answer
   x = 198,724.82