Finding the Third Proportional to 1,092,240 and 1,638,360

Step by Step Solution

1. Step 1: Write the proportion equation
   1,092,240 : 1,638,360 = 1,638,360 : x
2. Step 2: Convert to fraction form
   1,092,240/1,638,360 = 1,638,360/x
3. Step 3: Cross multiply
   1,092,240x = 1,638,360 × 1,638,360
4. Step 4: Simplify right side
   1,092,240x = 2,684,223,489,600
5. Step 5: Solve for x
   x = 2,684,223,489,600/1,092,240
6. Step 6: Final answer
   x = 2,457,540