Finding the Third Proportional to 90,170 and 140,171

Step by Step Solution

1. Step 1: Write the proportion equation
   90,170 : 140,171 = 140,171 : x
2. Step 2: Convert to fraction form
   90,170/140,171 = 140,171/x
3. Step 3: Cross multiply
   90,170x = 140,171 × 140,171
4. Step 4: Simplify right side
   90,170x = 19,647,909,241
5. Step 5: Solve for x
   x = 19,647,909,241/90,170
6. Step 6: Final answer
   x = 217,898.52