Finding the Third Proportional to 8,256 and 15,900

Step by Step Solution

1. Step 1: Write the proportion equation
   8,256 : 15,900 = 15,900 : x
2. Step 2: Convert to fraction form
   8,256/15,900 = 15,900/x
3. Step 3: Cross multiply
   8,256x = 15,900 × 15,900
4. Step 4: Simplify right side
   8,256x = 252,810,000
5. Step 5: Solve for x
   x = 252,810,000/8,256
6. Step 6: Final answer
   x = 30,621.37