Finding the Third Proportional to 161,895 and 253,411.50

Step by Step Solution

1. Step 1: Write the proportion equation
   161,895 : 253,411.50 = 253,411.50 : x
2. Step 2: Convert to fraction form
   161,895/253,411.50 = 253,411.50/x
3. Step 3: Cross multiply
   161,895x = 253,411.50 × 253,411.50
4. Step 4: Simplify right side
   161,895x = 64,217,388,332.25
5. Step 5: Solve for x
   x = 64,217,388,332.25/161,895
6. Step 6: Final answer
   x = 396,660.73