Finding the Third Proportional to 187.45 and 382.50

Step by Step Solution

1. Step 1: Write the proportion equation
   187.45 : 382.50 = 382.50 : x
2. Step 2: Convert to fraction form
   187.45/382.50 = 382.50/x
3. Step 3: Cross multiply
   187.45x = 382.50 × 382.50
4. Step 4: Simplify right side
   187.45x = 146,306.25
5. Step 5: Solve for x
   x = 146,306.25/187.45
6. Step 6: Final answer
   x = 780.50