Finding the Third Proportional to 1,042.45 and 1,247.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,042.45 : 1,247.91 = 1,247.91 : x
2. Step 2: Convert to fraction form
   1,042.45/1,247.91 = 1,247.91/x
3. Step 3: Cross multiply
   1,042.45x = 1,247.91 × 1,247.91
4. Step 4: Simplify right side
   1,042.45x = 1,557,270.01
5. Step 5: Solve for x
   x = 1,557,270.01/1,042.45
6. Step 6: Final answer
   x = 1,493.85