Finding the Third Proportional to 16,608 and 18,080

Step by Step Solution

1. Step 1: Write the proportion equation
   16,608 : 18,080 = 18,080 : x
2. Step 2: Convert to fraction form
   16,608/18,080 = 18,080/x
3. Step 3: Cross multiply
   16,608x = 18,080 × 18,080
4. Step 4: Simplify right side
   16,608x = 326,886,400
5. Step 5: Solve for x
   x = 326,886,400/16,608
6. Step 6: Final answer
   x = 19,682.47