Finding the Third Proportional to 16,431 and 25,128

Step by Step Solution

1. Step 1: Write the proportion equation
   16,431 : 25,128 = 25,128 : x
2. Step 2: Convert to fraction form
   16,431/25,128 = 25,128/x
3. Step 3: Cross multiply
   16,431x = 25,128 × 25,128
4. Step 4: Simplify right side
   16,431x = 631,416,384
5. Step 5: Solve for x
   x = 631,416,384/16,431
6. Step 6: Final answer
   x = 38,428.36