Finding the Third Proportional to 911.81 and 1,965.38

Step by Step Solution

1. Step 1: Write the proportion equation
   911.81 : 1,965.38 = 1,965.38 : x
2. Step 2: Convert to fraction form
   911.81/1,965.38 = 1,965.38/x
3. Step 3: Cross multiply
   911.81x = 1,965.38 × 1,965.38
4. Step 4: Simplify right side
   911.81x = 3,862,698.89
5. Step 5: Solve for x
   x = 3,862,698.89/911.81
6. Step 6: Final answer
   x = 4,236.29