Finding the Third Proportional to 1,018,391 and 2,119,636

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018,391 : 2,119,636 = 2,119,636 : x
2. Step 2: Convert to fraction form
   1,018,391/2,119,636 = 2,119,636/x
3. Step 3: Cross multiply
   1,018,391x = 2,119,636 × 2,119,636
4. Step 4: Simplify right side
   1,018,391x = 4,492,856,772,496
5. Step 5: Solve for x
   x = 4,492,856,772,496/1,018,391
6. Step 6: Final answer
   x = 4,411,720.81