Finding the Third Proportional to 60,309 and 131,871

Step by Step Solution

1. Step 1: Write the proportion equation
   60,309 : 131,871 = 131,871 : x
2. Step 2: Convert to fraction form
   60,309/131,871 = 131,871/x
3. Step 3: Cross multiply
   60,309x = 131,871 × 131,871
4. Step 4: Simplify right side
   60,309x = 17,389,960,641
5. Step 5: Solve for x
   x = 17,389,960,641/60,309
6. Step 6: Final answer
   x = 288,347.69