Finding the Third Proportional to 10,558.50 and 16,718

Step by Step Solution

1. Step 1: Write the proportion equation
   10,558.50 : 16,718 = 16,718 : x
2. Step 2: Convert to fraction form
   10,558.50/16,718 = 16,718/x
3. Step 3: Cross multiply
   10,558.50x = 16,718 × 16,718
4. Step 4: Simplify right side
   10,558.50x = 279,491,524
5. Step 5: Solve for x
   x = 279,491,524/10,558.50
6. Step 6: Final answer
   x = 26,470.76