Finding the Third Proportional to 12,384 and 28,728

Step by Step Solution

1. Step 1: Write the proportion equation
   12,384 : 28,728 = 28,728 : x
2. Step 2: Convert to fraction form
   12,384/28,728 = 28,728/x
3. Step 3: Cross multiply
   12,384x = 28,728 × 28,728
4. Step 4: Simplify right side
   12,384x = 825,297,984
5. Step 5: Solve for x
   x = 825,297,984/12,384
6. Step 6: Final answer
   x = 66,642.28