Finding the Third Proportional to 404.56 and 607.23

Step by Step Solution

1. Step 1: Write the proportion equation
   404.56 : 607.23 = 607.23 : x
2. Step 2: Convert to fraction form
   404.56/607.23 = 607.23/x
3. Step 3: Cross multiply
   404.56x = 607.23 × 607.23
4. Step 4: Simplify right side
   404.56x = 368,734.21
5. Step 5: Solve for x
   x = 368,734.21/404.56
6. Step 6: Final answer
   x = 911.45