Finding the Third Proportional to 250,018.50 and 397,173

Step by Step Solution

1. Step 1: Write the proportion equation
   250,018.50 : 397,173 = 397,173 : x
2. Step 2: Convert to fraction form
   250,018.50/397,173 = 397,173/x
3. Step 3: Cross multiply
   250,018.50x = 397,173 × 397,173
4. Step 4: Simplify right side
   250,018.50x = 157,746,391,929
5. Step 5: Solve for x
   x = 157,746,391,929/250,018.50
6. Step 6: Final answer
   x = 630,938.88