Finding the Third Proportional to 172,622 and 369,231.50

Step by Step Solution

1. Step 1: Write the proportion equation
   172,622 : 369,231.50 = 369,231.50 : x
2. Step 2: Convert to fraction form
   172,622/369,231.50 = 369,231.50/x
3. Step 3: Cross multiply
   172,622x = 369,231.50 × 369,231.50
4. Step 4: Simplify right side
   172,622x = 136,331,900,592.25
5. Step 5: Solve for x
   x = 136,331,900,592.25/172,622
6. Step 6: Final answer
   x = 789,771.30