Finding the Third Proportional to 16,878 and 25,976

Step by Step Solution

1. Step 1: Write the proportion equation
   16,878 : 25,976 = 25,976 : x
2. Step 2: Convert to fraction form
   16,878/25,976 = 25,976/x
3. Step 3: Cross multiply
   16,878x = 25,976 × 25,976
4. Step 4: Simplify right side
   16,878x = 674,752,576
5. Step 5: Solve for x
   x = 674,752,576/16,878
6. Step 6: Final answer
   x = 39,978.23