Finding the Third Proportional to 863.50 and 1,799

Step by Step Solution

1. Step 1: Write the proportion equation
   863.50 : 1,799 = 1,799 : x
2. Step 2: Convert to fraction form
   863.50/1,799 = 1,799/x
3. Step 3: Cross multiply
   863.50x = 1,799 × 1,799
4. Step 4: Simplify right side
   863.50x = 3,236,401
5. Step 5: Solve for x
   x = 3,236,401/863.50
6. Step 6: Final answer
   x = 3,748.00