Finding the Third Proportional to 39,385.25 and 86,424.38

Step by Step Solution

1. Step 1: Write the proportion equation
   39,385.25 : 86,424.38 = 86,424.38 : x
2. Step 2: Convert to fraction form
   39,385.25/86,424.38 = 86,424.38/x
3. Step 3: Cross multiply
   39,385.25x = 86,424.38 × 86,424.38
4. Step 4: Simplify right side
   39,385.25x = 7,469,172,594.14
5. Step 5: Solve for x
   x = 7,469,172,594.14/39,385.25
6. Step 6: Final answer
   x = 189,643.90