Finding the Third Proportional to 128,841.75 and 192,667.50

Step by Step Solution

1. Step 1: Write the proportion equation
   128,841.75 : 192,667.50 = 192,667.50 : x
2. Step 2: Convert to fraction form
   128,841.75/192,667.50 = 192,667.50/x
3. Step 3: Cross multiply
   128,841.75x = 192,667.50 × 192,667.50
4. Step 4: Simplify right side
   128,841.75x = 37,120,765,556.25
5. Step 5: Solve for x
   x = 37,120,765,556.25/128,841.75
6. Step 6: Final answer
   x = 288,111.31