Finding the Third Proportional to 1,236,978 and 2,683,872

Step by Step Solution

1. Step 1: Write the proportion equation
   1,236,978 : 2,683,872 = 2,683,872 : x
2. Step 2: Convert to fraction form
   1,236,978/2,683,872 = 2,683,872/x
3. Step 3: Cross multiply
   1,236,978x = 2,683,872 × 2,683,872
4. Step 4: Simplify right side
   1,236,978x = 7,203,168,912,384
5. Step 5: Solve for x
   x = 7,203,168,912,384/1,236,978
6. Step 6: Final answer
   x = 5,823,198.89