Finding the Third Proportional to 3,397,448 and 7,188,410

Step by Step Solution

1. Step 1: Write the proportion equation
   3,397,448 : 7,188,410 = 7,188,410 : x
2. Step 2: Convert to fraction form
   3,397,448/7,188,410 = 7,188,410/x
3. Step 3: Cross multiply
   3,397,448x = 7,188,410 × 7,188,410
4. Step 4: Simplify right side
   3,397,448x = 51,673,238,328,100
5. Step 5: Solve for x
   x = 51,673,238,328,100/3,397,448
6. Step 6: Final answer
   x = 15,209,427.29