Finding the Third Proportional to 10,618.50 and 16,866

Step by Step Solution

1. Step 1: Write the proportion equation
   10,618.50 : 16,866 = 16,866 : x
2. Step 2: Convert to fraction form
   10,618.50/16,866 = 16,866/x
3. Step 3: Cross multiply
   10,618.50x = 16,866 × 16,866
4. Step 4: Simplify right side
   10,618.50x = 284,461,956
5. Step 5: Solve for x
   x = 284,461,956/10,618.50
6. Step 6: Final answer
   x = 26,789.28