Finding the Third Proportional to 187.31 and 298.69

Step by Step Solution

1. Step 1: Write the proportion equation
   187.31 : 298.69 = 298.69 : x
2. Step 2: Convert to fraction form
   187.31/298.69 = 298.69/x
3. Step 3: Cross multiply
   187.31x = 298.69 × 298.69
4. Step 4: Simplify right side
   187.31x = 89,214.22
5. Step 5: Solve for x
   x = 89,214.22/187.31
6. Step 6: Final answer
   x = 476.29