Finding the Third Proportional to 1,989.56 and 3,132.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,989.56 : 3,132.42 = 3,132.42 : x
2. Step 2: Convert to fraction form
   1,989.56/3,132.42 = 3,132.42/x
3. Step 3: Cross multiply
   1,989.56x = 3,132.42 × 3,132.42
4. Step 4: Simplify right side
   1,989.56x = 9,812,066.80
5. Step 5: Solve for x
   x = 9,812,066.80/1,989.56
6. Step 6: Final answer
   x = 4,931.77