Finding the Third Proportional to 39,139.88 and 85,664.25

Step by Step Solution

1. Step 1: Write the proportion equation
   39,139.88 : 85,664.25 = 85,664.25 : x
2. Step 2: Convert to fraction form
   39,139.88/85,664.25 = 85,664.25/x
3. Step 3: Cross multiply
   39,139.88x = 85,664.25 × 85,664.25
4. Step 4: Simplify right side
   39,139.88x = 7,338,363,728.06
5. Step 5: Solve for x
   x = 7,338,363,728.06/39,139.88
6. Step 6: Final answer
   x = 187,490.73