Finding the Third Proportional to 144,922.50 and 309,745.69

Step by Step Solution

1. Step 1: Write the proportion equation
   144,922.50 : 309,745.69 = 309,745.69 : x
2. Step 2: Convert to fraction form
   144,922.50/309,745.69 = 309,745.69/x
3. Step 3: Cross multiply
   144,922.50x = 309,745.69 × 309,745.69
4. Step 4: Simplify right side
   144,922.50x = 95,942,390,924.85
5. Step 5: Solve for x
   x = 95,942,390,924.85/144,922.50
6. Step 6: Final answer
   x = 662,025.50