Finding the Third Proportional to 4,920 and 10,800

Step by Step Solution

1. Step 1: Write the proportion equation
   4,920 : 10,800 = 10,800 : x
2. Step 2: Convert to fraction form
   4,920/10,800 = 10,800/x
3. Step 3: Cross multiply
   4,920x = 10,800 × 10,800
4. Step 4: Simplify right side
   4,920x = 116,640,000
5. Step 5: Solve for x
   x = 116,640,000/4,920
6. Step 6: Final answer
   x = 23,707.32