Finding the Third Proportional to 3,388,438 and 7,440,428

Step by Step Solution

1. Step 1: Write the proportion equation
   3,388,438 : 7,440,428 = 7,440,428 : x
2. Step 2: Convert to fraction form
   3,388,438/7,440,428 = 7,440,428/x
3. Step 3: Cross multiply
   3,388,438x = 7,440,428 × 7,440,428
4. Step 4: Simplify right side
   3,388,438x = 55,359,968,823,184
5. Step 5: Solve for x
   x = 55,359,968,823,184/3,388,438
6. Step 6: Final answer
   x = 16,337,902.25