Finding the Third Proportional to 161,144 and 335,520.50

Step by Step Solution

1. Step 1: Write the proportion equation
   161,144 : 335,520.50 = 335,520.50 : x
2. Step 2: Convert to fraction form
   161,144/335,520.50 = 335,520.50/x
3. Step 3: Cross multiply
   161,144x = 335,520.50 × 335,520.50
4. Step 4: Simplify right side
   161,144x = 112,574,005,920.25
5. Step 5: Solve for x
   x = 112,574,005,920.25/161,144
6. Step 6: Final answer
   x = 698,592.60