Finding the Third Proportional to 3,405,612 and 5,273,661

Step by Step Solution

1. Step 1: Write the proportion equation
   3,405,612 : 5,273,661 = 5,273,661 : x
2. Step 2: Convert to fraction form
   3,405,612/5,273,661 = 5,273,661/x
3. Step 3: Cross multiply
   3,405,612x = 5,273,661 × 5,273,661
4. Step 4: Simplify right side
   3,405,612x = 27,811,500,342,921
5. Step 5: Solve for x
   x = 27,811,500,342,921/3,405,612
6. Step 6: Final answer
   x = 8,166,373.72