Finding the Third Proportional to 40,287.75 and 86,981.25

Step by Step Solution

1. Step 1: Write the proportion equation
   40,287.75 : 86,981.25 = 86,981.25 : x
2. Step 2: Convert to fraction form
   40,287.75/86,981.25 = 86,981.25/x
3. Step 3: Cross multiply
   40,287.75x = 86,981.25 × 86,981.25
4. Step 4: Simplify right side
   40,287.75x = 7,565,737,851.56
5. Step 5: Solve for x
   x = 7,565,737,851.56/40,287.75
6. Step 6: Final answer
   x = 187,792.51