Finding the Third Proportional to 91.13 and 208.83

Step by Step Solution

1. Step 1: Write the proportion equation
   91.13 : 208.83 = 208.83 : x
2. Step 2: Convert to fraction form
   91.13/208.83 = 208.83/x
3. Step 3: Cross multiply
   91.13x = 208.83 × 208.83
4. Step 4: Simplify right side
   91.13x = 43,609.19
5. Step 5: Solve for x
   x = 43,609.19/91.13
6. Step 6: Final answer
   x = 478.56