Finding the Third Proportional to 1,018,603 and 2,158,630

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018,603 : 2,158,630 = 2,158,630 : x
2. Step 2: Convert to fraction form
   1,018,603/2,158,630 = 2,158,630/x
3. Step 3: Cross multiply
   1,018,603x = 2,158,630 × 2,158,630
4. Step 4: Simplify right side
   1,018,603x = 4,659,683,476,900
5. Step 5: Solve for x
   x = 4,659,683,476,900/1,018,603
6. Step 6: Final answer
   x = 4,574,582.52