Finding the Third Proportional to 384.50 and 577.25

Step by Step Solution

1. Step 1: Write the proportion equation
   384.50 : 577.25 = 577.25 : x
2. Step 2: Convert to fraction form
   384.50/577.25 = 577.25/x
3. Step 3: Cross multiply
   384.50x = 577.25 × 577.25
4. Step 4: Simplify right side
   384.50x = 333,217.56
5. Step 5: Solve for x
   x = 333,217.56/384.50
6. Step 6: Final answer
   x = 866.63