Finding the Third Proportional to 243.25 and 369.50

Step by Step Solution

1. Step 1: Write the proportion equation
   243.25 : 369.50 = 369.50 : x
2. Step 2: Convert to fraction form
   243.25/369.50 = 369.50/x
3. Step 3: Cross multiply
   243.25x = 369.50 × 369.50
4. Step 4: Simplify right side
   243.25x = 136,530.25
5. Step 5: Solve for x
   x = 136,530.25/243.25
6. Step 6: Final answer
   x = 561.28