Finding the Third Proportional to 128,572.50 and 192,732

Step by Step Solution

1. Step 1: Write the proportion equation
   128,572.50 : 192,732 = 192,732 : x
2. Step 2: Convert to fraction form
   128,572.50/192,732 = 192,732/x
3. Step 3: Cross multiply
   128,572.50x = 192,732 × 192,732
4. Step 4: Simplify right side
   128,572.50x = 37,145,623,824
5. Step 5: Solve for x
   x = 37,145,623,824/128,572.50
6. Step 6: Final answer
   x = 288,908.00