Finding the Third Proportional to 20,161.41 and 42,629.41

Step by Step Solution

1. Step 1: Write the proportion equation
   20,161.41 : 42,629.41 = 42,629.41 : x
2. Step 2: Convert to fraction form
   20,161.41/42,629.41 = 42,629.41/x
3. Step 3: Cross multiply
   20,161.41x = 42,629.41 × 42,629.41
4. Step 4: Simplify right side
   20,161.41x = 1,817,266,943.31
5. Step 5: Solve for x
   x = 1,817,266,943.31/20,161.41
6. Step 6: Final answer
   x = 90,135.92