Finding the Third Proportional to 12,228 and 25,728

Step by Step Solution

1. Step 1: Write the proportion equation
   12,228 : 25,728 = 25,728 : x
2. Step 2: Convert to fraction form
   12,228/25,728 = 25,728/x
3. Step 3: Cross multiply
   12,228x = 25,728 × 25,728
4. Step 4: Simplify right side
   12,228x = 661,929,984
5. Step 5: Solve for x
   x = 661,929,984/12,228
6. Step 6: Final answer
   x = 54,132.32