Finding the Third Proportional to 9,938 and 21,391

Step by Step Solution

1. Step 1: Write the proportion equation
   9,938 : 21,391 = 21,391 : x
2. Step 2: Convert to fraction form
   9,938/21,391 = 21,391/x
3. Step 3: Cross multiply
   9,938x = 21,391 × 21,391
4. Step 4: Simplify right side
   9,938x = 457,574,881
5. Step 5: Solve for x
   x = 457,574,881/9,938
6. Step 6: Final answer
   x = 46,042.95