Finding the Third Proportional to 16,920 and 38,997

Step by Step Solution

1. Step 1: Write the proportion equation
   16,920 : 38,997 = 38,997 : x
2. Step 2: Convert to fraction form
   16,920/38,997 = 38,997/x
3. Step 3: Cross multiply
   16,920x = 38,997 × 38,997
4. Step 4: Simplify right side
   16,920x = 1,520,766,009
5. Step 5: Solve for x
   x = 1,520,766,009/16,920
6. Step 6: Final answer
   x = 89,879.79