Finding the Third Proportional to 3,431,739 and 7,461,078

Step by Step Solution

1. Step 1: Write the proportion equation
   3,431,739 : 7,461,078 = 7,461,078 : x
2. Step 2: Convert to fraction form
   3,431,739/7,461,078 = 7,461,078/x
3. Step 3: Cross multiply
   3,431,739x = 7,461,078 × 7,461,078
4. Step 4: Simplify right side
   3,431,739x = 55,667,684,922,084
5. Step 5: Solve for x
   x = 55,667,684,922,084/3,431,739
6. Step 6: Final answer
   x = 16,221,421.54