Finding the Third Proportional to 128,737.50 and 192,375

Step by Step Solution

1. Step 1: Write the proportion equation
   128,737.50 : 192,375 = 192,375 : x
2. Step 2: Convert to fraction form
   128,737.50/192,375 = 192,375/x
3. Step 3: Cross multiply
   128,737.50x = 192,375 × 192,375
4. Step 4: Simplify right side
   128,737.50x = 37,008,140,625
5. Step 5: Solve for x
   x = 37,008,140,625/128,737.50
6. Step 6: Final answer
   x = 287,469.78