Finding the Third Proportional to 123,190 and 171,635

Step by Step Solution

1. Step 1: Write the proportion equation
   123,190 : 171,635 = 171,635 : x
2. Step 2: Convert to fraction form
   123,190/171,635 = 171,635/x
3. Step 3: Cross multiply
   123,190x = 171,635 × 171,635
4. Step 4: Simplify right side
   123,190x = 29,458,573,225
5. Step 5: Solve for x
   x = 29,458,573,225/123,190
6. Step 6: Final answer
   x = 239,131.21