Finding the Third Proportional to 1,338,912 and 1,872,720

Step by Step Solution

1. Step 1: Write the proportion equation
   1,338,912 : 1,872,720 = 1,872,720 : x
2. Step 2: Convert to fraction form
   1,338,912/1,872,720 = 1,872,720/x
3. Step 3: Cross multiply
   1,338,912x = 1,872,720 × 1,872,720
4. Step 4: Simplify right side
   1,338,912x = 3,507,080,198,400
5. Step 5: Solve for x
   x = 3,507,080,198,400/1,338,912
6. Step 6: Final answer
   x = 2,619,350.79