Finding the Third Proportional to 678,728 and 1,462,360

Step by Step Solution

1. Step 1: Write the proportion equation
   678,728 : 1,462,360 = 1,462,360 : x
2. Step 2: Convert to fraction form
   678,728/1,462,360 = 1,462,360/x
3. Step 3: Cross multiply
   678,728x = 1,462,360 × 1,462,360
4. Step 4: Simplify right side
   678,728x = 2,138,496,769,600
5. Step 5: Solve for x
   x = 2,138,496,769,600/678,728
6. Step 6: Final answer
   x = 3,150,741.93