Finding the Third Proportional to 3,839,390 and 8,401,948

Step by Step Solution

1. Step 1: Write the proportion equation
   3,839,390 : 8,401,948 = 8,401,948 : x
2. Step 2: Convert to fraction form
   3,839,390/8,401,948 = 8,401,948/x
3. Step 3: Cross multiply
   3,839,390x = 8,401,948 × 8,401,948
4. Step 4: Simplify right side
   3,839,390x = 70,592,730,194,704
5. Step 5: Solve for x
   x = 70,592,730,194,704/3,839,390
6. Step 6: Final answer
   x = 18,386,444.25