Finding the Third Proportional to 25,707.38 and 39,728.25

Step by Step Solution

1. Step 1: Write the proportion equation
   25,707.38 : 39,728.25 = 39,728.25 : x
2. Step 2: Convert to fraction form
   25,707.38/39,728.25 = 39,728.25/x
3. Step 3: Cross multiply
   25,707.38x = 39,728.25 × 39,728.25
4. Step 4: Simplify right side
   25,707.38x = 1,578,333,848.06
5. Step 5: Solve for x
   x = 1,578,333,848.06/25,707.38
6. Step 6: Final answer
   x = 61,396.15