Finding the Third Proportional to 1,278,774 and 1,876,689

Step by Step Solution

1. Step 1: Write the proportion equation
   1,278,774 : 1,876,689 = 1,876,689 : x
2. Step 2: Convert to fraction form
   1,278,774/1,876,689 = 1,876,689/x
3. Step 3: Cross multiply
   1,278,774x = 1,876,689 × 1,876,689
4. Step 4: Simplify right side
   1,278,774x = 3,521,961,602,721
5. Step 5: Solve for x
   x = 3,521,961,602,721/1,278,774
6. Step 6: Final answer
   x = 2,754,170.48