Finding the Third Proportional to 187,173 and 401,142

Step by Step Solution

1. Step 1: Write the proportion equation
   187,173 : 401,142 = 401,142 : x
2. Step 2: Convert to fraction form
   187,173/401,142 = 401,142/x
3. Step 3: Cross multiply
   187,173x = 401,142 × 401,142
4. Step 4: Simplify right side
   187,173x = 160,914,904,164
5. Step 5: Solve for x
   x = 160,914,904,164/187,173
6. Step 6: Final answer
   x = 859,712.16