Finding the Third Proportional to 5,280 and 12,336

Step by Step Solution

1. Step 1: Write the proportion equation
   5,280 : 12,336 = 12,336 : x
2. Step 2: Convert to fraction form
   5,280/12,336 = 12,336/x
3. Step 3: Cross multiply
   5,280x = 12,336 × 12,336
4. Step 4: Simplify right side
   5,280x = 152,176,896
5. Step 5: Solve for x
   x = 152,176,896/5,280
6. Step 6: Final answer
   x = 28,821.38