Finding the Third Proportional to 20,571.47 and 30,139.59

Step by Step Solution

1. Step 1: Write the proportion equation
   20,571.47 : 30,139.59 = 30,139.59 : x
2. Step 2: Convert to fraction form
   20,571.47/30,139.59 = 30,139.59/x
3. Step 3: Cross multiply
   20,571.47x = 30,139.59 × 30,139.59
4. Step 4: Simplify right side
   20,571.47x = 908,395,111.42
5. Step 5: Solve for x
   x = 908,395,111.42/20,571.47
6. Step 6: Final answer
   x = 44,158.01