Finding the Third Proportional to 39,945.38 and 86,863.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,945.38 : 86,863.50 = 86,863.50 : x
2. Step 2: Convert to fraction form
   39,945.38/86,863.50 = 86,863.50/x
3. Step 3: Cross multiply
   39,945.38x = 86,863.50 × 86,863.50
4. Step 4: Simplify right side
   39,945.38x = 7,545,267,632.25
5. Step 5: Solve for x
   x = 7,545,267,632.25/39,945.38
6. Step 6: Final answer
   x = 188,889.64