Finding the Third Proportional to 1,382,720 and 1,858,240

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382,720 : 1,858,240 = 1,858,240 : x
2. Step 2: Convert to fraction form
   1,382,720/1,858,240 = 1,858,240/x
3. Step 3: Cross multiply
   1,382,720x = 1,858,240 × 1,858,240
4. Step 4: Simplify right side
   1,382,720x = 3,453,055,897,600
5. Step 5: Solve for x
   x = 3,453,055,897,600/1,382,720
6. Step 6: Final answer
   x = 2,497,292.22