Finding the Third Proportional to 21,354 and 31,479

Step by Step Solution

1. Step 1: Write the proportion equation
   21,354 : 31,479 = 31,479 : x
2. Step 2: Convert to fraction form
   21,354/31,479 = 31,479/x
3. Step 3: Cross multiply
   21,354x = 31,479 × 31,479
4. Step 4: Simplify right side
   21,354x = 990,927,441
5. Step 5: Solve for x
   x = 990,927,441/21,354
6. Step 6: Final answer
   x = 46,404.77