Finding the Third Proportional to 859,623 and 1,868,518

Step by Step Solution

1. Step 1: Write the proportion equation
   859,623 : 1,868,518 = 1,868,518 : x
2. Step 2: Convert to fraction form
   859,623/1,868,518 = 1,868,518/x
3. Step 3: Cross multiply
   859,623x = 1,868,518 × 1,868,518
4. Step 4: Simplify right side
   859,623x = 3,491,359,516,324
5. Step 5: Solve for x
   x = 3,491,359,516,324/859,623
6. Step 6: Final answer
   x = 4,061,500.82