Finding the Third Proportional to 87,871 and 140,109

Step by Step Solution

1. Step 1: Write the proportion equation
   87,871 : 140,109 = 140,109 : x
2. Step 2: Convert to fraction form
   87,871/140,109 = 140,109/x
3. Step 3: Cross multiply
   87,871x = 140,109 × 140,109
4. Step 4: Simplify right side
   87,871x = 19,630,531,881
5. Step 5: Solve for x
   x = 19,630,531,881/87,871
6. Step 6: Final answer
   x = 223,401.71