Finding the Third Proportional to 20,400.19 and 30,481.31

Step by Step Solution

1. Step 1: Write the proportion equation
   20,400.19 : 30,481.31 = 30,481.31 : x
2. Step 2: Convert to fraction form
   20,400.19/30,481.31 = 30,481.31/x
3. Step 3: Cross multiply
   20,400.19x = 30,481.31 × 30,481.31
4. Step 4: Simplify right side
   20,400.19x = 929,110,411.72
5. Step 5: Solve for x
   x = 929,110,411.72/20,400.19
6. Step 6: Final answer
   x = 45,544.21