Finding the Third Proportional to 128,760.50 and 173,268

Step by Step Solution

1. Step 1: Write the proportion equation
   128,760.50 : 173,268 = 173,268 : x
2. Step 2: Convert to fraction form
   128,760.50/173,268 = 173,268/x
3. Step 3: Cross multiply
   128,760.50x = 173,268 × 173,268
4. Step 4: Simplify right side
   128,760.50x = 30,021,799,824
5. Step 5: Solve for x
   x = 30,021,799,824/128,760.50
6. Step 6: Final answer
   x = 233,160.01