Finding the Third Proportional to 1,285.56 and 2,000.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,285.56 : 2,000.38 = 2,000.38 : x
2. Step 2: Convert to fraction form
   1,285.56/2,000.38 = 2,000.38/x
3. Step 3: Cross multiply
   1,285.56x = 2,000.38 × 2,000.38
4. Step 4: Simplify right side
   1,285.56x = 4,001,500.14
5. Step 5: Solve for x
   x = 4,001,500.14/1,285.56
6. Step 6: Final answer
   x = 3,112.65