Finding the Third Proportional to 16,320 and 17,760

Step by Step Solution

1. Step 1: Write the proportion equation
   16,320 : 17,760 = 17,760 : x
2. Step 2: Convert to fraction form
   16,320/17,760 = 17,760/x
3. Step 3: Cross multiply
   16,320x = 17,760 × 17,760
4. Step 4: Simplify right side
   16,320x = 315,417,600
5. Step 5: Solve for x
   x = 315,417,600/16,320
6. Step 6: Final answer
   x = 19,327.06