Finding the Third Proportional to 1,208.75 and 1,808.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,208.75 : 1,808.50 = 1,808.50 : x
2. Step 2: Convert to fraction form
   1,208.75/1,808.50 = 1,808.50/x
3. Step 3: Cross multiply
   1,208.75x = 1,808.50 × 1,808.50
4. Step 4: Simplify right side
   1,208.75x = 3,270,672.25
5. Step 5: Solve for x
   x = 3,270,672.25/1,208.75
6. Step 6: Final answer
   x = 2,705.83