Finding the Third Proportional to 16,554 and 21,255

Step by Step Solution

1. Step 1: Write the proportion equation
   16,554 : 21,255 = 21,255 : x
2. Step 2: Convert to fraction form
   16,554/21,255 = 21,255/x
3. Step 3: Cross multiply
   16,554x = 21,255 × 21,255
4. Step 4: Simplify right side
   16,554x = 451,775,025
5. Step 5: Solve for x
   x = 451,775,025/16,554
6. Step 6: Final answer
   x = 27,290.99