Finding the Third Proportional to 21,348 and 31,470

Step by Step Solution

1. Step 1: Write the proportion equation
   21,348 : 31,470 = 31,470 : x
2. Step 2: Convert to fraction form
   21,348/31,470 = 31,470/x
3. Step 3: Cross multiply
   21,348x = 31,470 × 31,470
4. Step 4: Simplify right side
   21,348x = 990,360,900
5. Step 5: Solve for x
   x = 990,360,900/21,348
6. Step 6: Final answer
   x = 46,391.27