Finding the Third Proportional to 40,317 and 87,631.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,317 : 87,631.50 = 87,631.50 : x
2. Step 2: Convert to fraction form
   40,317/87,631.50 = 87,631.50/x
3. Step 3: Cross multiply
   40,317x = 87,631.50 × 87,631.50
4. Step 4: Simplify right side
   40,317x = 7,679,279,792.25
5. Step 5: Solve for x
   x = 7,679,279,792.25/40,317
6. Step 6: Final answer
   x = 190,472.50