Finding the Third Proportional to 16,386 and 38,520

Step by Step Solution

1. Step 1: Write the proportion equation
   16,386 : 38,520 = 38,520 : x
2. Step 2: Convert to fraction form
   16,386/38,520 = 38,520/x
3. Step 3: Cross multiply
   16,386x = 38,520 × 38,520
4. Step 4: Simplify right side
   16,386x = 1,483,790,400
5. Step 5: Solve for x
   x = 1,483,790,400/16,386
6. Step 6: Final answer
   x = 90,552.33