Finding the Third Proportional to 121,495.50 and 171,016.50

Step by Step Solution

1. Step 1: Write the proportion equation
   121,495.50 : 171,016.50 = 171,016.50 : x
2. Step 2: Convert to fraction form
   121,495.50/171,016.50 = 171,016.50/x
3. Step 3: Cross multiply
   121,495.50x = 171,016.50 × 171,016.50
4. Step 4: Simplify right side
   121,495.50x = 29,246,643,272.25
5. Step 5: Solve for x
   x = 29,246,643,272.25/121,495.50
6. Step 6: Final answer
   x = 240,722.03