Finding the Third Proportional to 3,428,450 and 7,372,870

Step by Step Solution

1. Step 1: Write the proportion equation
   3,428,450 : 7,372,870 = 7,372,870 : x
2. Step 2: Convert to fraction form
   3,428,450/7,372,870 = 7,372,870/x
3. Step 3: Cross multiply
   3,428,450x = 7,372,870 × 7,372,870
4. Step 4: Simplify right side
   3,428,450x = 54,359,212,036,900
5. Step 5: Solve for x
   x = 54,359,212,036,900/3,428,450
6. Step 6: Final answer
   x = 15,855,331.72