Finding the Third Proportional to 359.06 and 786.31

Step by Step Solution

1. Step 1: Write the proportion equation
   359.06 : 786.31 = 786.31 : x
2. Step 2: Convert to fraction form
   359.06/786.31 = 786.31/x
3. Step 3: Cross multiply
   359.06x = 786.31 × 786.31
4. Step 4: Simplify right side
   359.06x = 618,287.35
5. Step 5: Solve for x
   x = 618,287.35/359.06
6. Step 6: Final answer
   x = 1,721.95