Finding the Third Proportional to 14,487 and 31,790

Step by Step Solution

1. Step 1: Write the proportion equation
   14,487 : 31,790 = 31,790 : x
2. Step 2: Convert to fraction form
   14,487/31,790 = 31,790/x
3. Step 3: Cross multiply
   14,487x = 31,790 × 31,790
4. Step 4: Simplify right side
   14,487x = 1,010,604,100
5. Step 5: Solve for x
   x = 1,010,604,100/14,487
6. Step 6: Final answer
   x = 69,759.38