Finding the Third Proportional to 21,019.22 and 30,720.38

Step by Step Solution

1. Step 1: Write the proportion equation
   21,019.22 : 30,720.38 = 30,720.38 : x
2. Step 2: Convert to fraction form
   21,019.22/30,720.38 = 30,720.38/x
3. Step 3: Cross multiply
   21,019.22x = 30,720.38 × 30,720.38
4. Step 4: Simplify right side
   21,019.22x = 943,741,440.14
5. Step 5: Solve for x
   x = 943,741,440.14/21,019.22
6. Step 6: Final answer
   x = 44,898.98