Finding the Third Proportional to 128,567.25 and 192,726

Step by Step Solution

1. Step 1: Write the proportion equation
   128,567.25 : 192,726 = 192,726 : x
2. Step 2: Convert to fraction form
   128,567.25/192,726 = 192,726/x
3. Step 3: Cross multiply
   128,567.25x = 192,726 × 192,726
4. Step 4: Simplify right side
   128,567.25x = 37,143,311,076
5. Step 5: Solve for x
   x = 37,143,311,076/128,567.25
6. Step 6: Final answer
   x = 288,901.81