Finding the Third Proportional to 2,116.75 and 3,191.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116.75 : 3,191.75 = 3,191.75 : x
2. Step 2: Convert to fraction form
   2,116.75/3,191.75 = 3,191.75/x
3. Step 3: Cross multiply
   2,116.75x = 3,191.75 × 3,191.75
4. Step 4: Simplify right side
   2,116.75x = 10,187,268.06
5. Step 5: Solve for x
   x = 10,187,268.06/2,116.75
6. Step 6: Final answer
   x = 4,812.69