Finding the Third Proportional to 123,187 and 171,630.50

Step by Step Solution

1. Step 1: Write the proportion equation
   123,187 : 171,630.50 = 171,630.50 : x
2. Step 2: Convert to fraction form
   123,187/171,630.50 = 171,630.50/x
3. Step 3: Cross multiply
   123,187x = 171,630.50 × 171,630.50
4. Step 4: Simplify right side
   123,187x = 29,457,028,530.25
5. Step 5: Solve for x
   x = 29,457,028,530.25/123,187
6. Step 6: Final answer
   x = 239,124.49