Finding the Third Proportional to 609.82 and 1,356.12

Step by Step Solution

1. Step 1: Write the proportion equation
   609.82 : 1,356.12 = 1,356.12 : x
2. Step 2: Convert to fraction form
   609.82/1,356.12 = 1,356.12/x
3. Step 3: Cross multiply
   609.82x = 1,356.12 × 1,356.12
4. Step 4: Simplify right side
   609.82x = 1,839,053.83
5. Step 5: Solve for x
   x = 1,839,053.83/609.82
6. Step 6: Final answer
   x = 3,015.73