Finding the Third Proportional to 1,081.50 and 2,239.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081.50 : 2,239.50 = 2,239.50 : x
2. Step 2: Convert to fraction form
   1,081.50/2,239.50 = 2,239.50/x
3. Step 3: Cross multiply
   1,081.50x = 2,239.50 × 2,239.50
4. Step 4: Simplify right side
   1,081.50x = 5,015,360.25
5. Step 5: Solve for x
   x = 5,015,360.25/1,081.50
6. Step 6: Final answer
   x = 4,637.41