Finding the Third Proportional to 16,398 and 38,718

Step by Step Solution

1. Step 1: Write the proportion equation
   16,398 : 38,718 = 38,718 : x
2. Step 2: Convert to fraction form
   16,398/38,718 = 38,718/x
3. Step 3: Cross multiply
   16,398x = 38,718 × 38,718
4. Step 4: Simplify right side
   16,398x = 1,499,083,524
5. Step 5: Solve for x
   x = 1,499,083,524/16,398
6. Step 6: Final answer
   x = 91,418.68