Finding the Third Proportional to 1,018,622 and 2,158,666

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018,622 : 2,158,666 = 2,158,666 : x
2. Step 2: Convert to fraction form
   1,018,622/2,158,666 = 2,158,666/x
3. Step 3: Cross multiply
   1,018,622x = 2,158,666 × 2,158,666
4. Step 4: Simplify right side
   1,018,622x = 4,659,838,899,556
5. Step 5: Solve for x
   x = 4,659,838,899,556/1,018,622
6. Step 6: Final answer
   x = 4,574,649.77