Finding the Third Proportional to 853,540 and 1,321,530

Step by Step Solution

1. Step 1: Write the proportion equation
   853,540 : 1,321,530 = 1,321,530 : x
2. Step 2: Convert to fraction form
   853,540/1,321,530 = 1,321,530/x
3. Step 3: Cross multiply
   853,540x = 1,321,530 × 1,321,530
4. Step 4: Simplify right side
   853,540x = 1,746,441,540,900
5. Step 5: Solve for x
   x = 1,746,441,540,900/853,540
6. Step 6: Final answer
   x = 2,046,115.64