Finding the Third Proportional to 1,018,658 and 2,121,030

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018,658 : 2,121,030 = 2,121,030 : x
2. Step 2: Convert to fraction form
   1,018,658/2,121,030 = 2,121,030/x
3. Step 3: Cross multiply
   1,018,658x = 2,121,030 × 2,121,030
4. Step 4: Simplify right side
   1,018,658x = 4,498,768,260,900
5. Step 5: Solve for x
   x = 4,498,768,260,900/1,018,658
6. Step 6: Final answer
   x = 4,416,367.67