Finding the Third Proportional to 144,486 and 309,001.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,486 : 309,001.50 = 309,001.50 : x
2. Step 2: Convert to fraction form
   144,486/309,001.50 = 309,001.50/x
3. Step 3: Cross multiply
   144,486x = 309,001.50 × 309,001.50
4. Step 4: Simplify right side
   144,486x = 95,481,927,002.25
5. Step 5: Solve for x
   x = 95,481,927,002.25/144,486
6. Step 6: Final answer
   x = 660,838.61