Finding the Third Proportional to 1,617,828 and 3,479,880

Step by Step Solution

1. Step 1: Write the proportion equation
   1,617,828 : 3,479,880 = 3,479,880 : x
2. Step 2: Convert to fraction form
   1,617,828/3,479,880 = 3,479,880/x
3. Step 3: Cross multiply
   1,617,828x = 3,479,880 × 3,479,880
4. Step 4: Simplify right side
   1,617,828x = 12,109,564,814,400
5. Step 5: Solve for x
   x = 12,109,564,814,400/1,617,828
6. Step 6: Final answer
   x = 7,485,075.55