Finding the Third Proportional to 3,356,874 and 7,171,740

Step by Step Solution

1. Step 1: Write the proportion equation
   3,356,874 : 7,171,740 = 7,171,740 : x
2. Step 2: Convert to fraction form
   3,356,874/7,171,740 = 7,171,740/x
3. Step 3: Cross multiply
   3,356,874x = 7,171,740 × 7,171,740
4. Step 4: Simplify right side
   3,356,874x = 51,433,854,627,600
5. Step 5: Solve for x
   x = 51,433,854,627,600/3,356,874
6. Step 6: Final answer
   x = 15,321,949.72