Finding the Third Proportional to 104,557.50 and 162,128.50

Step by Step Solution

1. Step 1: Write the proportion equation
   104,557.50 : 162,128.50 = 162,128.50 : x
2. Step 2: Convert to fraction form
   104,557.50/162,128.50 = 162,128.50/x
3. Step 3: Cross multiply
   104,557.50x = 162,128.50 × 162,128.50
4. Step 4: Simplify right side
   104,557.50x = 26,285,650,512.25
5. Step 5: Solve for x
   x = 26,285,650,512.25/104,557.50
6. Step 6: Final answer
   x = 251,399.00