Finding the Third Proportional to 3,591,858 and 5,576,661

Step by Step Solution

1. Step 1: Write the proportion equation
   3,591,858 : 5,576,661 = 5,576,661 : x
2. Step 2: Convert to fraction form
   3,591,858/5,576,661 = 5,576,661/x
3. Step 3: Cross multiply
   3,591,858x = 5,576,661 × 5,576,661
4. Step 4: Simplify right side
   3,591,858x = 31,099,147,908,921
5. Step 5: Solve for x
   x = 31,099,147,908,921/3,591,858
6. Step 6: Final answer
   x = 8,658,234.24