Finding the Third Proportional to 9,478 and 19,982

Step by Step Solution

1. Step 1: Write the proportion equation
   9,478 : 19,982 = 19,982 : x
2. Step 2: Convert to fraction form
   9,478/19,982 = 19,982/x
3. Step 3: Cross multiply
   9,478x = 19,982 × 19,982
4. Step 4: Simplify right side
   9,478x = 399,280,324
5. Step 5: Solve for x
   x = 399,280,324/9,478
6. Step 6: Final answer
   x = 42,127.07