Finding the Third Proportional to 849.09 and 1,142.72

Step by Step Solution

1. Step 1: Write the proportion equation
   849.09 : 1,142.72 = 1,142.72 : x
2. Step 2: Convert to fraction form
   849.09/1,142.72 = 1,142.72/x
3. Step 3: Cross multiply
   849.09x = 1,142.72 × 1,142.72
4. Step 4: Simplify right side
   849.09x = 1,305,806.14
5. Step 5: Solve for x
   x = 1,305,806.14/849.09
6. Step 6: Final answer
   x = 1,537.88