Finding the Third Proportional to 9,920 and 10,976

Step by Step Solution

1. Step 1: Write the proportion equation
   9,920 : 10,976 = 10,976 : x
2. Step 2: Convert to fraction form
   9,920/10,976 = 10,976/x
3. Step 3: Cross multiply
   9,920x = 10,976 × 10,976
4. Step 4: Simplify right side
   9,920x = 120,472,576
5. Step 5: Solve for x
   x = 120,472,576/9,920
6. Step 6: Final answer
   x = 12,144.41