Finding the Third Proportional to 20,439.84 and 31,719.09

Step by Step Solution

1. Step 1: Write the proportion equation
   20,439.84 : 31,719.09 = 31,719.09 : x
2. Step 2: Convert to fraction form
   20,439.84/31,719.09 = 31,719.09/x
3. Step 3: Cross multiply
   20,439.84x = 31,719.09 × 31,719.09
4. Step 4: Simplify right side
   20,439.84x = 1,006,100,908.32
5. Step 5: Solve for x
   x = 1,006,100,908.32/20,439.84
6. Step 6: Final answer
   x = 49,222.53