Finding the Third Proportional to 858,606 and 1,864,704

Step by Step Solution

1. Step 1: Write the proportion equation
   858,606 : 1,864,704 = 1,864,704 : x
2. Step 2: Convert to fraction form
   858,606/1,864,704 = 1,864,704/x
3. Step 3: Cross multiply
   858,606x = 1,864,704 × 1,864,704
4. Step 4: Simplify right side
   858,606x = 3,477,121,007,616
5. Step 5: Solve for x
   x = 3,477,121,007,616/858,606
6. Step 6: Final answer
   x = 4,049,728.29