Finding the Third Proportional to 5,258,708 and 8,220,212

Step by Step Solution

1. Step 1: Write the proportion equation
   5,258,708 : 8,220,212 = 8,220,212 : x
2. Step 2: Convert to fraction form
   5,258,708/8,220,212 = 8,220,212/x
3. Step 3: Cross multiply
   5,258,708x = 8,220,212 × 8,220,212
4. Step 4: Simplify right side
   5,258,708x = 67,571,885,324,944
5. Step 5: Solve for x
   x = 67,571,885,324,944/5,258,708
6. Step 6: Final answer
   x = 12,849,522.23