Finding the Third Proportional to 87,321.50 and 131,492.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,321.50 : 131,492.50 = 131,492.50 : x
2. Step 2: Convert to fraction form
   87,321.50/131,492.50 = 131,492.50/x
3. Step 3: Cross multiply
   87,321.50x = 131,492.50 × 131,492.50
4. Step 4: Simplify right side
   87,321.50x = 17,290,277,556.25
5. Step 5: Solve for x
   x = 17,290,277,556.25/87,321.50
6. Step 6: Final answer
   x = 198,007.11