Finding the Third Proportional to 1,018,440 and 2,120,562

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018,440 : 2,120,562 = 2,120,562 : x
2. Step 2: Convert to fraction form
   1,018,440/2,120,562 = 2,120,562/x
3. Step 3: Cross multiply
   1,018,440x = 2,120,562 × 2,120,562
4. Step 4: Simplify right side
   1,018,440x = 4,496,783,195,844
5. Step 5: Solve for x
   x = 4,496,783,195,844/1,018,440
6. Step 6: Final answer
   x = 4,415,363.89