Finding the Third Proportional to 172,270.50 and 365,391

Step by Step Solution

1. Step 1: Write the proportion equation
   172,270.50 : 365,391 = 365,391 : x
2. Step 2: Convert to fraction form
   172,270.50/365,391 = 365,391/x
3. Step 3: Cross multiply
   172,270.50x = 365,391 × 365,391
4. Step 4: Simplify right side
   172,270.50x = 133,510,582,881
5. Step 5: Solve for x
   x = 133,510,582,881/172,270.50
6. Step 6: Final answer
   x = 775,005.49