Finding the Third Proportional to 1,278,772 and 1,876,686

Step by Step Solution

1. Step 1: Write the proportion equation
   1,278,772 : 1,876,686 = 1,876,686 : x
2. Step 2: Convert to fraction form
   1,278,772/1,876,686 = 1,876,686/x
3. Step 3: Cross multiply
   1,278,772x = 1,876,686 × 1,876,686
4. Step 4: Simplify right side
   1,278,772x = 3,521,950,342,596
5. Step 5: Solve for x
   x = 3,521,950,342,596/1,278,772
6. Step 6: Final answer
   x = 2,754,165.98