Finding the Third Proportional to 1,989.56 and 3,299.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,989.56 : 3,299.06 = 3,299.06 : x
2. Step 2: Convert to fraction form
   1,989.56/3,299.06 = 3,299.06/x
3. Step 3: Cross multiply
   1,989.56x = 3,299.06 × 3,299.06
4. Step 4: Simplify right side
   1,989.56x = 10,883,813.38
5. Step 5: Solve for x
   x = 10,883,813.38/1,989.56
6. Step 6: Final answer
   x = 5,470.46