Finding the Third Proportional to 9,434.25 and 19,939.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,434.25 : 19,939.50 = 19,939.50 : x
2. Step 2: Convert to fraction form
   9,434.25/19,939.50 = 19,939.50/x
3. Step 3: Cross multiply
   9,434.25x = 19,939.50 × 19,939.50
4. Step 4: Simplify right side
   9,434.25x = 397,583,660.25
5. Step 5: Solve for x
   x = 397,583,660.25/9,434.25
6. Step 6: Final answer
   x = 42,142.58