Finding the Third Proportional to 859,685 and 1,789,145

Step by Step Solution

1. Step 1: Write the proportion equation
   859,685 : 1,789,145 = 1,789,145 : x
2. Step 2: Convert to fraction form
   859,685/1,789,145 = 1,789,145/x
3. Step 3: Cross multiply
   859,685x = 1,789,145 × 1,789,145
4. Step 4: Simplify right side
   859,685x = 3,201,039,831,025
5. Step 5: Solve for x
   x = 3,201,039,831,025/859,685
6. Step 6: Final answer
   x = 3,723,503.18