Finding the Third Proportional to 779,976 and 1,687,878

Step by Step Solution

1. Step 1: Write the proportion equation
   779,976 : 1,687,878 = 1,687,878 : x
2. Step 2: Convert to fraction form
   779,976/1,687,878 = 1,687,878/x
3. Step 3: Cross multiply
   779,976x = 1,687,878 × 1,687,878
4. Step 4: Simplify right side
   779,976x = 2,848,932,142,884
5. Step 5: Solve for x
   x = 2,848,932,142,884/779,976
6. Step 6: Final answer
   x = 3,652,589.49