Finding the Third Proportional to 105,212 and 158,910

Step by Step Solution

1. Step 1: Write the proportion equation
   105,212 : 158,910 = 158,910 : x
2. Step 2: Convert to fraction form
   105,212/158,910 = 158,910/x
3. Step 3: Cross multiply
   105,212x = 158,910 × 158,910
4. Step 4: Simplify right side
   105,212x = 25,252,388,100
5. Step 5: Solve for x
   x = 25,252,388,100/105,212
6. Step 6: Final answer
   x = 240,014.33