Finding the Third Proportional to 1,018,886 and 2,120,468

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018,886 : 2,120,468 = 2,120,468 : x
2. Step 2: Convert to fraction form
   1,018,886/2,120,468 = 2,120,468/x
3. Step 3: Cross multiply
   1,018,886x = 2,120,468 × 2,120,468
4. Step 4: Simplify right side
   1,018,886x = 4,496,384,539,024
5. Step 5: Solve for x
   x = 4,496,384,539,024/1,018,886
6. Step 6: Final answer
   x = 4,413,039.87