Finding the Third Proportional to 20,462.63 and 30,721.78

Step by Step Solution

1. Step 1: Write the proportion equation
   20,462.63 : 30,721.78 = 30,721.78 : x
2. Step 2: Convert to fraction form
   20,462.63/30,721.78 = 30,721.78/x
3. Step 3: Cross multiply
   20,462.63x = 30,721.78 × 30,721.78
4. Step 4: Simplify right side
   20,462.63x = 943,827,843.17
5. Step 5: Solve for x
   x = 943,827,843.17/20,462.63
6. Step 6: Final answer
   x = 46,124.48