Finding the Third Proportional to 3,810,078 and 5,431,320

Step by Step Solution

1. Step 1: Write the proportion equation
   3,810,078 : 5,431,320 = 5,431,320 : x
2. Step 2: Convert to fraction form
   3,810,078/5,431,320 = 5,431,320/x
3. Step 3: Cross multiply
   3,810,078x = 5,431,320 × 5,431,320
4. Step 4: Simplify right side
   3,810,078x = 29,499,236,942,400
5. Step 5: Solve for x
   x = 29,499,236,942,400/3,810,078
6. Step 6: Final answer
   x = 7,742,423.37