Finding the Third Proportional to 144,925.50 and 309,751.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,925.50 : 309,751.50 = 309,751.50 : x
2. Step 2: Convert to fraction form
   144,925.50/309,751.50 = 309,751.50/x
3. Step 3: Cross multiply
   144,925.50x = 309,751.50 × 309,751.50
4. Step 4: Simplify right side
   144,925.50x = 95,945,991,752.25
5. Step 5: Solve for x
   x = 95,945,991,752.25/144,925.50
6. Step 6: Final answer
   x = 662,036.64