Finding the Third Proportional to 726.38 and 1,111.31

Step by Step Solution

1. Step 1: Write the proportion equation
   726.38 : 1,111.31 = 1,111.31 : x
2. Step 2: Convert to fraction form
   726.38/1,111.31 = 1,111.31/x
3. Step 3: Cross multiply
   726.38x = 1,111.31 × 1,111.31
4. Step 4: Simplify right side
   726.38x = 1,235,015.47
5. Step 5: Solve for x
   x = 1,235,015.47/726.38
6. Step 6: Final answer
   x = 1,700.25