Finding the Third Proportional to 16,200 and 19,080

Step by Step Solution

1. Step 1: Write the proportion equation
   16,200 : 19,080 = 19,080 : x
2. Step 2: Convert to fraction form
   16,200/19,080 = 19,080/x
3. Step 3: Cross multiply
   16,200x = 19,080 × 19,080
4. Step 4: Simplify right side
   16,200x = 364,046,400
5. Step 5: Solve for x
   x = 364,046,400/16,200
6. Step 6: Final answer
   x = 22,472