Finding the Third Proportional to 1,018,608 and 2,158,640

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018,608 : 2,158,640 = 2,158,640 : x
2. Step 2: Convert to fraction form
   1,018,608/2,158,640 = 2,158,640/x
3. Step 3: Cross multiply
   1,018,608x = 2,158,640 × 2,158,640
4. Step 4: Simplify right side
   1,018,608x = 4,659,726,649,600
5. Step 5: Solve for x
   x = 4,659,726,649,600/1,018,608
6. Step 6: Final answer
   x = 4,574,602.45