Finding the Third Proportional to 859,620 and 1,868,493

Step by Step Solution

1. Step 1: Write the proportion equation
   859,620 : 1,868,493 = 1,868,493 : x
2. Step 2: Convert to fraction form
   859,620/1,868,493 = 1,868,493/x
3. Step 3: Cross multiply
   859,620x = 1,868,493 × 1,868,493
4. Step 4: Simplify right side
   859,620x = 3,491,266,091,049
5. Step 5: Solve for x
   x = 3,491,266,091,049/859,620
6. Step 6: Final answer
   x = 4,061,406.31