Finding the Third Proportional to 16,055 and 21,309

Step by Step Solution

1. Step 1: Write the proportion equation
   16,055 : 21,309 = 21,309 : x
2. Step 2: Convert to fraction form
   16,055/21,309 = 21,309/x
3. Step 3: Cross multiply
   16,055x = 21,309 × 21,309
4. Step 4: Simplify right side
   16,055x = 454,073,481
5. Step 5: Solve for x
   x = 454,073,481/16,055
6. Step 6: Final answer
   x = 28,282.37