Finding the Third Proportional to 104.31 and 243.69

Step by Step Solution

1. Step 1: Write the proportion equation
   104.31 : 243.69 = 243.69 : x
2. Step 2: Convert to fraction form
   104.31/243.69 = 243.69/x
3. Step 3: Cross multiply
   104.31x = 243.69 × 243.69
4. Step 4: Simplify right side
   104.31x = 59,383.60
5. Step 5: Solve for x
   x = 59,383.60/104.31
6. Step 6: Final answer
   x = 569.29