Finding the Third Proportional to 9,427.75 and 19,621.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,427.75 : 19,621.38 = 19,621.38 : x
2. Step 2: Convert to fraction form
   9,427.75/19,621.38 = 19,621.38/x
3. Step 3: Cross multiply
   9,427.75x = 19,621.38 × 19,621.38
4. Step 4: Simplify right side
   9,427.75x = 384,998,356.89
5. Step 5: Solve for x
   x = 384,998,356.89/9,427.75
6. Step 6: Final answer
   x = 40,836.72