Finding the Third Proportional to 1,686,668 and 3,435,816

Step by Step Solution

1. Step 1: Write the proportion equation
   1,686,668 : 3,435,816 = 3,435,816 : x
2. Step 2: Convert to fraction form
   1,686,668/3,435,816 = 3,435,816/x
3. Step 3: Cross multiply
   1,686,668x = 3,435,816 × 3,435,816
4. Step 4: Simplify right side
   1,686,668x = 11,804,831,585,856
5. Step 5: Solve for x
   x = 11,804,831,585,856/1,686,668
6. Step 6: Final answer
   x = 6,998,906.47