Finding the Third Proportional to 3,407,802 and 7,270,257

Step by Step Solution

1. Step 1: Write the proportion equation
   3,407,802 : 7,270,257 = 7,270,257 : x
2. Step 2: Convert to fraction form
   3,407,802/7,270,257 = 7,270,257/x
3. Step 3: Cross multiply
   3,407,802x = 7,270,257 × 7,270,257
4. Step 4: Simplify right side
   3,407,802x = 52,856,636,846,049
5. Step 5: Solve for x
   x = 52,856,636,846,049/3,407,802
6. Step 6: Final answer
   x = 15,510,477.68