Finding the Third Proportional to 161,801.50 and 253,264.50

Step by Step Solution

1. Step 1: Write the proportion equation
   161,801.50 : 253,264.50 = 253,264.50 : x
2. Step 2: Convert to fraction form
   161,801.50/253,264.50 = 253,264.50/x
3. Step 3: Cross multiply
   161,801.50x = 253,264.50 × 253,264.50
4. Step 4: Simplify right side
   161,801.50x = 64,142,906,960.25
5. Step 5: Solve for x
   x = 64,142,906,960.25/161,801.50
6. Step 6: Final answer
   x = 396,429.62