Finding the Third Proportional to 89,680.50 and 192,240

Step by Step Solution

1. Step 1: Write the proportion equation
   89,680.50 : 192,240 = 192,240 : x
2. Step 2: Convert to fraction form
   89,680.50/192,240 = 192,240/x
3. Step 3: Cross multiply
   89,680.50x = 192,240 × 192,240
4. Step 4: Simplify right side
   89,680.50x = 36,956,217,600
5. Step 5: Solve for x
   x = 36,956,217,600/89,680.50
6. Step 6: Final answer
   x = 412,087.55