Finding the Third Proportional to 3,420,718 and 7,436,831

Step by Step Solution

1. Step 1: Write the proportion equation
   3,420,718 : 7,436,831 = 7,436,831 : x
2. Step 2: Convert to fraction form
   3,420,718/7,436,831 = 7,436,831/x
3. Step 3: Cross multiply
   3,420,718x = 7,436,831 × 7,436,831
4. Step 4: Simplify right side
   3,420,718x = 55,306,455,322,561
5. Step 5: Solve for x
   x = 55,306,455,322,561/3,420,718
6. Step 6: Final answer
   x = 16,168,083.81