Finding the Third Proportional to 87,340 and 187,131.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,340 : 187,131.50 = 187,131.50 : x
2. Step 2: Convert to fraction form
   87,340/187,131.50 = 187,131.50/x
3. Step 3: Cross multiply
   87,340x = 187,131.50 × 187,131.50
4. Step 4: Simplify right side
   87,340x = 35,018,198,292.25
5. Step 5: Solve for x
   x = 35,018,198,292.25/87,340
6. Step 6: Final answer
   x = 400,941.13