Finding the Third Proportional to 39,960.84 and 86,147.30

Step by Step Solution

1. Step 1: Write the proportion equation
   39,960.84 : 86,147.30 = 86,147.30 : x
2. Step 2: Convert to fraction form
   39,960.84/86,147.30 = 86,147.30/x
3. Step 3: Cross multiply
   39,960.84x = 86,147.30 × 86,147.30
4. Step 4: Simplify right side
   39,960.84x = 7,421,356,758.87
5. Step 5: Solve for x
   x = 7,421,356,758.87/39,960.84
6. Step 6: Final answer
   x = 185,715.72