Finding the Third Proportional to 857,214 and 1,866,816

Step by Step Solution

1. Step 1: Write the proportion equation
   857,214 : 1,866,816 = 1,866,816 : x
2. Step 2: Convert to fraction form
   857,214/1,866,816 = 1,866,816/x
3. Step 3: Cross multiply
   857,214x = 1,866,816 × 1,866,816
4. Step 4: Simplify right side
   857,214x = 3,485,001,977,856
5. Step 5: Solve for x
   x = 3,485,001,977,856/857,214
6. Step 6: Final answer
   x = 4,065,498.20