Finding the Third Proportional to 3,838,408 and 8,208,320

Step by Step Solution

1. Step 1: Write the proportion equation
   3,838,408 : 8,208,320 = 8,208,320 : x
2. Step 2: Convert to fraction form
   3,838,408/8,208,320 = 8,208,320/x
3. Step 3: Cross multiply
   3,838,408x = 8,208,320 × 8,208,320
4. Step 4: Simplify right side
   3,838,408x = 67,376,517,222,400
5. Step 5: Solve for x
   x = 67,376,517,222,400/3,838,408
6. Step 6: Final answer
   x = 17,553,245.31