Finding the Third Proportional to 858,504 and 1,866,476

Step by Step Solution

1. Step 1: Write the proportion equation
   858,504 : 1,866,476 = 1,866,476 : x
2. Step 2: Convert to fraction form
   858,504/1,866,476 = 1,866,476/x
3. Step 3: Cross multiply
   858,504x = 1,866,476 × 1,866,476
4. Step 4: Simplify right side
   858,504x = 3,483,732,658,576
5. Step 5: Solve for x
   x = 3,483,732,658,576/858,504
6. Step 6: Final answer
   x = 4,057,910.81