Finding the Third Proportional to 356.81 and 607.69

Step by Step Solution

1. Step 1: Write the proportion equation
   356.81 : 607.69 = 607.69 : x
2. Step 2: Convert to fraction form
   356.81/607.69 = 607.69/x
3. Step 3: Cross multiply
   356.81x = 607.69 × 607.69
4. Step 4: Simplify right side
   356.81x = 369,284.10
5. Step 5: Solve for x
   x = 369,284.10/356.81
6. Step 6: Final answer
   x = 1,034.95