Finding the Third Proportional to 128,362.50 and 192,942

Step by Step Solution

1. Step 1: Write the proportion equation
   128,362.50 : 192,942 = 192,942 : x
2. Step 2: Convert to fraction form
   128,362.50/192,942 = 192,942/x
3. Step 3: Cross multiply
   128,362.50x = 192,942 × 192,942
4. Step 4: Simplify right side
   128,362.50x = 37,226,615,364
5. Step 5: Solve for x
   x = 37,226,615,364/128,362.50
6. Step 6: Final answer
   x = 290,011.61