Finding the Third Proportional to 1,392,120 and 3,039,912

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392,120 : 3,039,912 = 3,039,912 : x
2. Step 2: Convert to fraction form
   1,392,120/3,039,912 = 3,039,912/x
3. Step 3: Cross multiply
   1,392,120x = 3,039,912 × 3,039,912
4. Step 4: Simplify right side
   1,392,120x = 9,241,064,967,744
5. Step 5: Solve for x
   x = 9,241,064,967,744/1,392,120
6. Step 6: Final answer
   x = 6,638,123.85