Finding the Third Proportional to 1,392,123 and 3,039,918

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392,123 : 3,039,918 = 3,039,918 : x
2. Step 2: Convert to fraction form
   1,392,123/3,039,918 = 3,039,918/x
3. Step 3: Cross multiply
   1,392,123x = 3,039,918 × 3,039,918
4. Step 4: Simplify right side
   1,392,123x = 9,241,101,446,724
5. Step 5: Solve for x
   x = 9,241,101,446,724/1,392,123
6. Step 6: Final answer
   x = 6,638,135.74