Finding the Third Proportional to 3,451,821 and 7,509,666

Step by Step Solution

1. Step 1: Write the proportion equation
   3,451,821 : 7,509,666 = 7,509,666 : x
2. Step 2: Convert to fraction form
   3,451,821/7,509,666 = 7,509,666/x
3. Step 3: Cross multiply
   3,451,821x = 7,509,666 × 7,509,666
4. Step 4: Simplify right side
   3,451,821x = 56,395,083,431,556
5. Step 5: Solve for x
   x = 56,395,083,431,556/3,451,821
6. Step 6: Final answer
   x = 16,337,777.49