Finding the Third Proportional to 10,875 and 12,387

Step by Step Solution

1. Step 1: Write the proportion equation
   10,875 : 12,387 = 12,387 : x
2. Step 2: Convert to fraction form
   10,875/12,387 = 12,387/x
3. Step 3: Cross multiply
   10,875x = 12,387 × 12,387
4. Step 4: Simplify right side
   10,875x = 153,437,769
5. Step 5: Solve for x
   x = 153,437,769/10,875
6. Step 6: Final answer
   x = 14,109.22