Finding the Third Proportional to 1,222.59 and 1,860.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,222.59 : 1,860.47 = 1,860.47 : x
2. Step 2: Convert to fraction form
   1,222.59/1,860.47 = 1,860.47/x
3. Step 3: Cross multiply
   1,222.59x = 1,860.47 × 1,860.47
4. Step 4: Simplify right side
   1,222.59x = 3,461,343.97
5. Step 5: Solve for x
   x = 3,461,343.97/1,222.59
6. Step 6: Final answer
   x = 2,831.15