Finding the Third Proportional to 1,621,330 and 3,519,571

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621,330 : 3,519,571 = 3,519,571 : x
2. Step 2: Convert to fraction form
   1,621,330/3,519,571 = 3,519,571/x
3. Step 3: Cross multiply
   1,621,330x = 3,519,571 × 3,519,571
4. Step 4: Simplify right side
   1,621,330x = 12,387,380,024,041
5. Step 5: Solve for x
   x = 12,387,380,024,041/1,621,330
6. Step 6: Final answer
   x = 7,640,258.32