Finding the Third Proportional to 39,715.31 and 86,664.94

Step by Step Solution

1. Step 1: Write the proportion equation
   39,715.31 : 86,664.94 = 86,664.94 : x
2. Step 2: Convert to fraction form
   39,715.31/86,664.94 = 86,664.94/x
3. Step 3: Cross multiply
   39,715.31x = 86,664.94 × 86,664.94
4. Step 4: Simplify right side
   39,715.31x = 7,510,811,391.88
5. Step 5: Solve for x
   x = 7,510,811,391.88/39,715.31
6. Step 6: Final answer
   x = 189,116.26