Finding the Third Proportional to 1,018,620 and 2,158,664

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018,620 : 2,158,664 = 2,158,664 : x
2. Step 2: Convert to fraction form
   1,018,620/2,158,664 = 2,158,664/x
3. Step 3: Cross multiply
   1,018,620x = 2,158,664 × 2,158,664
4. Step 4: Simplify right side
   1,018,620x = 4,659,830,264,896
5. Step 5: Solve for x
   x = 4,659,830,264,896/1,018,620
6. Step 6: Final answer
   x = 4,574,650.28