Finding the Third Proportional to 1,485.56 and 2,089.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,485.56 : 2,089.69 = 2,089.69 : x
2. Step 2: Convert to fraction form
   1,485.56/2,089.69 = 2,089.69/x
3. Step 3: Cross multiply
   1,485.56x = 2,089.69 × 2,089.69
4. Step 4: Simplify right side
   1,485.56x = 4,366,793.85
5. Step 5: Solve for x
   x = 4,366,793.85/1,485.56
6. Step 6: Final answer
   x = 2,939.49