Finding the Third Proportional to 3,409,872 and 5,682,312

Step by Step Solution

1. Step 1: Write the proportion equation
   3,409,872 : 5,682,312 = 5,682,312 : x
2. Step 2: Convert to fraction form
   3,409,872/5,682,312 = 5,682,312/x
3. Step 3: Cross multiply
   3,409,872x = 5,682,312 × 5,682,312
4. Step 4: Simplify right side
   3,409,872x = 32,288,669,665,344
5. Step 5: Solve for x
   x = 32,288,669,665,344/3,409,872
6. Step 6: Final answer
   x = 9,469,173.52