Finding the Third Proportional to 72,488 and 159,690

Step by Step Solution

1. Step 1: Write the proportion equation
   72,488 : 159,690 = 159,690 : x
2. Step 2: Convert to fraction form
   72,488/159,690 = 159,690/x
3. Step 3: Cross multiply
   72,488x = 159,690 × 159,690
4. Step 4: Simplify right side
   72,488x = 25,500,896,100
5. Step 5: Solve for x
   x = 25,500,896,100/72,488
6. Step 6: Final answer
   x = 351,794.73