Finding the Third Proportional to 1,686,879 and 3,642,547

Step by Step Solution

1. Step 1: Write the proportion equation
   1,686,879 : 3,642,547 = 3,642,547 : x
2. Step 2: Convert to fraction form
   1,686,879/3,642,547 = 3,642,547/x
3. Step 3: Cross multiply
   1,686,879x = 3,642,547 × 3,642,547
4. Step 4: Simplify right side
   1,686,879x = 13,268,148,647,209
5. Step 5: Solve for x
   x = 13,268,148,647,209/1,686,879
6. Step 6: Final answer
   x = 7,865,501.11