Finding the Third Proportional to 859,621 and 1,868,514

Step by Step Solution

1. Step 1: Write the proportion equation
   859,621 : 1,868,514 = 1,868,514 : x
2. Step 2: Convert to fraction form
   859,621/1,868,514 = 1,868,514/x
3. Step 3: Cross multiply
   859,621x = 1,868,514 × 1,868,514
4. Step 4: Simplify right side
   859,621x = 3,491,344,568,196
5. Step 5: Solve for x
   x = 3,491,344,568,196/859,621
6. Step 6: Final answer
   x = 4,061,492.88