Finding the Third Proportional to 1,223,828 and 1,720,375

Step by Step Solution

1. Step 1: Write the proportion equation
   1,223,828 : 1,720,375 = 1,720,375 : x
2. Step 2: Convert to fraction form
   1,223,828/1,720,375 = 1,720,375/x
3. Step 3: Cross multiply
   1,223,828x = 1,720,375 × 1,720,375
4. Step 4: Simplify right side
   1,223,828x = 2,959,690,140,625
5. Step 5: Solve for x
   x = 2,959,690,140,625/1,223,828
6. Step 6: Final answer
   x = 2,418,387.34