Finding the Third Proportional to 144,159 and 309,628.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,159 : 309,628.50 = 309,628.50 : x
2. Step 2: Convert to fraction form
   144,159/309,628.50 = 309,628.50/x
3. Step 3: Cross multiply
   144,159x = 309,628.50 × 309,628.50
4. Step 4: Simplify right side
   144,159x = 95,869,808,012.25
5. Step 5: Solve for x
   x = 95,869,808,012.25/144,159
6. Step 6: Final answer
   x = 665,028.25