Finding the Third Proportional to 239,148 and 365,078.25

Step by Step Solution

1. Step 1: Write the proportion equation
   239,148 : 365,078.25 = 365,078.25 : x
2. Step 2: Convert to fraction form
   239,148/365,078.25 = 365,078.25/x
3. Step 3: Cross multiply
   239,148x = 365,078.25 × 365,078.25
4. Step 4: Simplify right side
   239,148x = 133,282,128,623.06
5. Step 5: Solve for x
   x = 133,282,128,623.06/239,148
6. Step 6: Final answer
   x = 557,320.69