Finding the Third Proportional to 1,201,920 and 1,799,128

Step by Step Solution

1. Step 1: Write the proportion equation
   1,201,920 : 1,799,128 = 1,799,128 : x
2. Step 2: Convert to fraction form
   1,201,920/1,799,128 = 1,799,128/x
3. Step 3: Cross multiply
   1,201,920x = 1,799,128 × 1,799,128
4. Step 4: Simplify right side
   1,201,920x = 3,236,861,560,384
5. Step 5: Solve for x
   x = 3,236,861,560,384/1,201,920
6. Step 6: Final answer
   x = 2,693,075.71