Finding the Third Proportional to 12,168 and 15,624

Step by Step Solution

1. Step 1: Write the proportion equation
   12,168 : 15,624 = 15,624 : x
2. Step 2: Convert to fraction form
   12,168/15,624 = 15,624/x
3. Step 3: Cross multiply
   12,168x = 15,624 × 15,624
4. Step 4: Simplify right side
   12,168x = 244,109,376
5. Step 5: Solve for x
   x = 244,109,376/12,168
6. Step 6: Final answer
   x = 20,061.59