Finding the Third Proportional to 161,057 and 343,442.50

Step by Step Solution

1. Step 1: Write the proportion equation
   161,057 : 343,442.50 = 343,442.50 : x
2. Step 2: Convert to fraction form
   161,057/343,442.50 = 343,442.50/x
3. Step 3: Cross multiply
   161,057x = 343,442.50 × 343,442.50
4. Step 4: Simplify right side
   161,057x = 117,952,750,806.25
5. Step 5: Solve for x
   x = 117,952,750,806.25/161,057
6. Step 6: Final answer
   x = 732,366.50