Finding the Third Proportional to 3,405,274 and 7,408,418

Step by Step Solution

1. Step 1: Write the proportion equation
   3,405,274 : 7,408,418 = 7,408,418 : x
2. Step 2: Convert to fraction form
   3,405,274/7,408,418 = 7,408,418/x
3. Step 3: Cross multiply
   3,405,274x = 7,408,418 × 7,408,418
4. Step 4: Simplify right side
   3,405,274x = 54,884,657,262,724
5. Step 5: Solve for x
   x = 54,884,657,262,724/3,405,274
6. Step 6: Final answer
   x = 16,117,545.10