Finding the Third Proportional to 1,018,605 and 2,158,634

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018,605 : 2,158,634 = 2,158,634 : x
2. Step 2: Convert to fraction form
   1,018,605/2,158,634 = 2,158,634/x
3. Step 3: Cross multiply
   1,018,605x = 2,158,634 × 2,158,634
4. Step 4: Simplify right side
   1,018,605x = 4,659,700,745,956
5. Step 5: Solve for x
   x = 4,659,700,745,956/1,018,605
6. Step 6: Final answer
   x = 4,574,590.49