Finding the Third Proportional to 1,338,718 and 2,039,456

Step by Step Solution

1. Step 1: Write the proportion equation
   1,338,718 : 2,039,456 = 2,039,456 : x
2. Step 2: Convert to fraction form
   1,338,718/2,039,456 = 2,039,456/x
3. Step 3: Cross multiply
   1,338,718x = 2,039,456 × 2,039,456
4. Step 4: Simplify right side
   1,338,718x = 4,159,380,775,936
5. Step 5: Solve for x
   x = 4,159,380,775,936/1,338,718
6. Step 6: Final answer
   x = 3,106,988.01