Finding the Third Proportional to 672.19 and 1,016.72

Step by Step Solution

1. Step 1: Write the proportion equation
   672.19 : 1,016.72 = 1,016.72 : x
2. Step 2: Convert to fraction form
   672.19/1,016.72 = 1,016.72/x
3. Step 3: Cross multiply
   672.19x = 1,016.72 × 1,016.72
4. Step 4: Simplify right side
   672.19x = 1,033,717.02
5. Step 5: Solve for x
   x = 1,033,717.02/672.19
6. Step 6: Final answer
   x = 1,537.84