Finding the Third Proportional to 162,640 and 253,796.50

Step by Step Solution

1. Step 1: Write the proportion equation
   162,640 : 253,796.50 = 253,796.50 : x
2. Step 2: Convert to fraction form
   162,640/253,796.50 = 253,796.50/x
3. Step 3: Cross multiply
   162,640x = 253,796.50 × 253,796.50
4. Step 4: Simplify right side
   162,640x = 64,412,663,412.25
5. Step 5: Solve for x
   x = 64,412,663,412.25/162,640
6. Step 6: Final answer
   x = 396,044.41