Finding the Third Proportional to 140,359.50 and 215,745.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,359.50 : 215,745.50 = 215,745.50 : x
2. Step 2: Convert to fraction form
   140,359.50/215,745.50 = 215,745.50/x
3. Step 3: Cross multiply
   140,359.50x = 215,745.50 × 215,745.50
4. Step 4: Simplify right side
   140,359.50x = 46,546,120,770.25
5. Step 5: Solve for x
   x = 46,546,120,770.25/140,359.50
6. Step 6: Final answer
   x = 331,620.74