Finding the Third Proportional to 60,439.50 and 131,259

Step by Step Solution

1. Step 1: Write the proportion equation
   60,439.50 : 131,259 = 131,259 : x
2. Step 2: Convert to fraction form
   60,439.50/131,259 = 131,259/x
3. Step 3: Cross multiply
   60,439.50x = 131,259 × 131,259
4. Step 4: Simplify right side
   60,439.50x = 17,228,925,081
5. Step 5: Solve for x
   x = 17,228,925,081/60,439.50
6. Step 6: Final answer
   x = 285,060.68