Finding the Third Proportional to 858,660 and 1,864,812

Step by Step Solution

1. Step 1: Write the proportion equation
   858,660 : 1,864,812 = 1,864,812 : x
2. Step 2: Convert to fraction form
   858,660/1,864,812 = 1,864,812/x
3. Step 3: Cross multiply
   858,660x = 1,864,812 × 1,864,812
4. Step 4: Simplify right side
   858,660x = 3,477,523,795,344
5. Step 5: Solve for x
   x = 3,477,523,795,344/858,660
6. Step 6: Final answer
   x = 4,049,942.70