Finding the Third Proportional to 1,991.50 and 2,357.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,991.50 : 2,357.50 = 2,357.50 : x
2. Step 2: Convert to fraction form
   1,991.50/2,357.50 = 2,357.50/x
3. Step 3: Cross multiply
   1,991.50x = 2,357.50 × 2,357.50
4. Step 4: Simplify right side
   1,991.50x = 5,557,806.25
5. Step 5: Solve for x
   x = 5,557,806.25/1,991.50
6. Step 6: Final answer
   x = 2,790.76