Finding the Third Proportional to 191.58 and 287.37

Step by Step Solution

1. Step 1: Write the proportion equation
   191.58 : 287.37 = 287.37 : x
2. Step 2: Convert to fraction form
   191.58/287.37 = 287.37/x
3. Step 3: Cross multiply
   191.58x = 287.37 × 287.37
4. Step 4: Simplify right side
   191.58x = 82,580.29
5. Step 5: Solve for x
   x = 82,580.29/191.58
6. Step 6: Final answer
   x = 431.05