Finding the Third Proportional to 1,142.89 and 2,443.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,142.89 : 2,443.56 = 2,443.56 : x
2. Step 2: Convert to fraction form
   1,142.89/2,443.56 = 2,443.56/x
3. Step 3: Cross multiply
   1,142.89x = 2,443.56 × 2,443.56
4. Step 4: Simplify right side
   1,142.89x = 5,970,966.07
5. Step 5: Solve for x
   x = 5,970,966.07/1,142.89
6. Step 6: Final answer
   x = 5,224.45