Finding the Third Proportional to 3,390,661 and 5,085,998

Step by Step Solution

1. Step 1: Write the proportion equation
   3,390,661 : 5,085,998 = 5,085,998 : x
2. Step 2: Convert to fraction form
   3,390,661/5,085,998 = 5,085,998/x
3. Step 3: Cross multiply
   3,390,661x = 5,085,998 × 5,085,998
4. Step 4: Simplify right side
   3,390,661x = 25,867,375,656,004
5. Step 5: Solve for x
   x = 25,867,375,656,004/3,390,661
6. Step 6: Final answer
   x = 7,629,006.75