Finding the Third Proportional to 40,215.75 and 86,664.75

Step by Step Solution

1. Step 1: Write the proportion equation
   40,215.75 : 86,664.75 = 86,664.75 : x
2. Step 2: Convert to fraction form
   40,215.75/86,664.75 = 86,664.75/x
3. Step 3: Cross multiply
   40,215.75x = 86,664.75 × 86,664.75
4. Step 4: Simplify right side
   40,215.75x = 7,510,778,892.56
5. Step 5: Solve for x
   x = 7,510,778,892.56/40,215.75
6. Step 6: Final answer
   x = 186,762.12