Finding the Third Proportional to 65,866 and 142,099

Step by Step Solution

1. Step 1: Write the proportion equation
   65,866 : 142,099 = 142,099 : x
2. Step 2: Convert to fraction form
   65,866/142,099 = 142,099/x
3. Step 3: Cross multiply
   65,866x = 142,099 × 142,099
4. Step 4: Simplify right side
   65,866x = 20,192,125,801
5. Step 5: Solve for x
   x = 20,192,125,801/65,866
6. Step 6: Final answer
   x = 306,563.72