Finding the Third Proportional to 678,504 and 1,475,040

Step by Step Solution

1. Step 1: Write the proportion equation
   678,504 : 1,475,040 = 1,475,040 : x
2. Step 2: Convert to fraction form
   678,504/1,475,040 = 1,475,040/x
3. Step 3: Cross multiply
   678,504x = 1,475,040 × 1,475,040
4. Step 4: Simplify right side
   678,504x = 2,175,743,001,600
5. Step 5: Solve for x
   x = 2,175,743,001,600/678,504
6. Step 6: Final answer
   x = 3,206,676.75