Finding the Third Proportional to 3,397,487 and 7,188,493

Step by Step Solution

1. Step 1: Write the proportion equation
   3,397,487 : 7,188,493 = 7,188,493 : x
2. Step 2: Convert to fraction form
   3,397,487/7,188,493 = 7,188,493/x
3. Step 3: Cross multiply
   3,397,487x = 7,188,493 × 7,188,493
4. Step 4: Simplify right side
   3,397,487x = 51,674,431,611,049
5. Step 5: Solve for x
   x = 51,674,431,611,049/3,397,487
6. Step 6: Final answer
   x = 15,209,603.93