Finding the Third Proportional to 16,866 and 18,270

Step by Step Solution

1. Step 1: Write the proportion equation
   16,866 : 18,270 = 18,270 : x
2. Step 2: Convert to fraction form
   16,866/18,270 = 18,270/x
3. Step 3: Cross multiply
   16,866x = 18,270 × 18,270
4. Step 4: Simplify right side
   16,866x = 333,792,900
5. Step 5: Solve for x
   x = 333,792,900/16,866
6. Step 6: Final answer
   x = 19,790.88