Finding the Third Proportional to 8,728 and 18,256

Step by Step Solution

1. Step 1: Write the proportion equation
   8,728 : 18,256 = 18,256 : x
2. Step 2: Convert to fraction form
   8,728/18,256 = 18,256/x
3. Step 3: Cross multiply
   8,728x = 18,256 × 18,256
4. Step 4: Simplify right side
   8,728x = 333,281,536
5. Step 5: Solve for x
   x = 333,281,536/8,728
6. Step 6: Final answer
   x = 38,185.33