Finding the Third Proportional to 858,609 and 1,864,710

Step by Step Solution

1. Step 1: Write the proportion equation
   858,609 : 1,864,710 = 1,864,710 : x
2. Step 2: Convert to fraction form
   858,609/1,864,710 = 1,864,710/x
3. Step 3: Cross multiply
   858,609x = 1,864,710 × 1,864,710
4. Step 4: Simplify right side
   858,609x = 3,477,143,384,100
5. Step 5: Solve for x
   x = 3,477,143,384,100/858,609
6. Step 6: Final answer
   x = 4,049,740.20