Finding the Third Proportional to 14,880 and 20,406

Step by Step Solution

1. Step 1: Write the proportion equation
   14,880 : 20,406 = 20,406 : x
2. Step 2: Convert to fraction form
   14,880/20,406 = 20,406/x
3. Step 3: Cross multiply
   14,880x = 20,406 × 20,406
4. Step 4: Simplify right side
   14,880x = 416,404,836
5. Step 5: Solve for x
   x = 416,404,836/14,880
6. Step 6: Final answer
   x = 27,984.20