Finding the Third Proportional to 20,642.06 and 28,722.09

Step by Step Solution

1. Step 1: Write the proportion equation
   20,642.06 : 28,722.09 = 28,722.09 : x
2. Step 2: Convert to fraction form
   20,642.06/28,722.09 = 28,722.09/x
3. Step 3: Cross multiply
   20,642.06x = 28,722.09 × 28,722.09
4. Step 4: Simplify right side
   20,642.06x = 824,958,669.38
5. Step 5: Solve for x
   x = 824,958,669.38/20,642.06
6. Step 6: Final answer
   x = 39,964.93