Finding the Third Proportional to 858,576 and 1,864,776

Step by Step Solution

1. Step 1: Write the proportion equation
   858,576 : 1,864,776 = 1,864,776 : x
2. Step 2: Convert to fraction form
   858,576/1,864,776 = 1,864,776/x
3. Step 3: Cross multiply
   858,576x = 1,864,776 × 1,864,776
4. Step 4: Simplify right side
   858,576x = 3,477,389,530,176
5. Step 5: Solve for x
   x = 3,477,389,530,176/858,576
6. Step 6: Final answer
   x = 4,050,182.55