Finding the Third Proportional to 1,231.69 and 1,860.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,231.69 : 1,860.28 = 1,860.28 : x
2. Step 2: Convert to fraction form
   1,231.69/1,860.28 = 1,860.28/x
3. Step 3: Cross multiply
   1,231.69x = 1,860.28 × 1,860.28
4. Step 4: Simplify right side
   1,231.69x = 3,460,646.33
5. Step 5: Solve for x
   x = 3,460,646.33/1,231.69
6. Step 6: Final answer
   x = 2,809.68