Finding the Third Proportional to 1,200.38 and 1,800.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200.38 : 1,800.56 = 1,800.56 : x
2. Step 2: Convert to fraction form
   1,200.38/1,800.56 = 1,800.56/x
3. Step 3: Cross multiply
   1,200.38x = 1,800.56 × 1,800.56
4. Step 4: Simplify right side
   1,200.38x = 3,242,025.32
5. Step 5: Solve for x
   x = 3,242,025.32/1,200.38
6. Step 6: Final answer
   x = 2,700.84