Finding the Third Proportional to 859,617 and 1,868,508

Step by Step Solution

1. Step 1: Write the proportion equation
   859,617 : 1,868,508 = 1,868,508 : x
2. Step 2: Convert to fraction form
   859,617/1,868,508 = 1,868,508/x
3. Step 3: Cross multiply
   859,617x = 1,868,508 × 1,868,508
4. Step 4: Simplify right side
   859,617x = 3,491,322,146,064
5. Step 5: Solve for x
   x = 3,491,322,146,064/859,617
6. Step 6: Final answer
   x = 4,061,485.69