Finding the Third Proportional to 8,724 and 10,644

Step by Step Solution

1. Step 1: Write the proportion equation
   8,724 : 10,644 = 10,644 : x
2. Step 2: Convert to fraction form
   8,724/10,644 = 10,644/x
3. Step 3: Cross multiply
   8,724x = 10,644 × 10,644
4. Step 4: Simplify right side
   8,724x = 113,294,736
5. Step 5: Solve for x
   x = 113,294,736/8,724
6. Step 6: Final answer
   x = 12,986.56