Finding the Third Proportional to 243.56 and 307.94

Step by Step Solution

1. Step 1: Write the proportion equation
   243.56 : 307.94 = 307.94 : x
2. Step 2: Convert to fraction form
   243.56/307.94 = 307.94/x
3. Step 3: Cross multiply
   243.56x = 307.94 × 307.94
4. Step 4: Simplify right side
   243.56x = 94,825.50
5. Step 5: Solve for x
   x = 94,825.50/243.56
6. Step 6: Final answer
   x = 389.33