Finding the Third Proportional to 187.31 and 300.80

Step by Step Solution

1. Step 1: Write the proportion equation
   187.31 : 300.80 = 300.80 : x
2. Step 2: Convert to fraction form
   187.31/300.80 = 300.80/x
3. Step 3: Cross multiply
   187.31x = 300.80 × 300.80
4. Step 4: Simplify right side
   187.31x = 90,478.76
5. Step 5: Solve for x
   x = 90,478.76/187.31
6. Step 6: Final answer
   x = 483.04