Finding the Third Proportional to 1,338,720 and 2,039,459

Step by Step Solution

1. Step 1: Write the proportion equation
   1,338,720 : 2,039,459 = 2,039,459 : x
2. Step 2: Convert to fraction form
   1,338,720/2,039,459 = 2,039,459/x
3. Step 3: Cross multiply
   1,338,720x = 2,039,459 × 2,039,459
4. Step 4: Simplify right side
   1,338,720x = 4,159,393,012,681
5. Step 5: Solve for x
   x = 4,159,393,012,681/1,338,720
6. Step 6: Final answer
   x = 3,106,992.51