Finding the Third Proportional to 8,388 and 16,520

Step by Step Solution

1. Step 1: Write the proportion equation
   8,388 : 16,520 = 16,520 : x
2. Step 2: Convert to fraction form
   8,388/16,520 = 16,520/x
3. Step 3: Cross multiply
   8,388x = 16,520 × 16,520
4. Step 4: Simplify right side
   8,388x = 272,910,400
5. Step 5: Solve for x
   x = 272,910,400/8,388
6. Step 6: Final answer
   x = 32,535.81