Finding the Third Proportional to 1,200.45 and 1,863.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200.45 : 1,863.95 = 1,863.95 : x
2. Step 2: Convert to fraction form
   1,200.45/1,863.95 = 1,863.95/x
3. Step 3: Cross multiply
   1,200.45x = 1,863.95 × 1,863.95
4. Step 4: Simplify right side
   1,200.45x = 3,474,306.69
5. Step 5: Solve for x
   x = 3,474,306.69/1,200.45
6. Step 6: Final answer
   x = 2,894.18