Finding the Third Proportional to 483.56 and 768.56

Step by Step Solution

1. Step 1: Write the proportion equation
   483.56 : 768.56 = 768.56 : x
2. Step 2: Convert to fraction form
   483.56/768.56 = 768.56/x
3. Step 3: Cross multiply
   483.56x = 768.56 × 768.56
4. Step 4: Simplify right side
   483.56x = 590,688.32
5. Step 5: Solve for x
   x = 590,688.32/483.56
6. Step 6: Final answer
   x = 1,221.53