Finding the Third Proportional to 25,051.78 and 39,639.38

Step by Step Solution

1. Step 1: Write the proportion equation
   25,051.78 : 39,639.38 = 39,639.38 : x
2. Step 2: Convert to fraction form
   25,051.78/39,639.38 = 39,639.38/x
3. Step 3: Cross multiply
   25,051.78x = 39,639.38 × 39,639.38
4. Step 4: Simplify right side
   25,051.78x = 1,571,280,050.39
5. Step 5: Solve for x
   x = 1,571,280,050.39/25,051.78
6. Step 6: Final answer
   x = 62,721.29