Finding the Third Proportional to 3,315,078 and 7,140,258

Step by Step Solution

1. Step 1: Write the proportion equation
   3,315,078 : 7,140,258 = 7,140,258 : x
2. Step 2: Convert to fraction form
   3,315,078/7,140,258 = 7,140,258/x
3. Step 3: Cross multiply
   3,315,078x = 7,140,258 × 7,140,258
4. Step 4: Simplify right side
   3,315,078x = 50,983,284,306,564
5. Step 5: Solve for x
   x = 50,983,284,306,564/3,315,078
6. Step 6: Final answer
   x = 15,379,211.08