Finding the Third Proportional to 9,142 and 19,928

Step by Step Solution

1. Step 1: Write the proportion equation
   9,142 : 19,928 = 19,928 : x
2. Step 2: Convert to fraction form
   9,142/19,928 = 19,928/x
3. Step 3: Cross multiply
   9,142x = 19,928 × 19,928
4. Step 4: Simplify right side
   9,142x = 397,125,184
5. Step 5: Solve for x
   x = 397,125,184/9,142
6. Step 6: Final answer
   x = 43,439.64