Finding the Third Proportional to 2,821,880 and 4,258,260

Step by Step Solution

1. Step 1: Write the proportion equation
   2,821,880 : 4,258,260 = 4,258,260 : x
2. Step 2: Convert to fraction form
   2,821,880/4,258,260 = 4,258,260/x
3. Step 3: Cross multiply
   2,821,880x = 4,258,260 × 4,258,260
4. Step 4: Simplify right side
   2,821,880x = 18,132,778,227,600
5. Step 5: Solve for x
   x = 18,132,778,227,600/2,821,880
6. Step 6: Final answer
   x = 6,425,779.35