Finding the Third Proportional to 144,182.53 and 309,688.31

Step by Step Solution

1. Step 1: Write the proportion equation
   144,182.53 : 309,688.31 = 309,688.31 : x
2. Step 2: Convert to fraction form
   144,182.53/309,688.31 = 309,688.31/x
3. Step 3: Cross multiply
   144,182.53x = 309,688.31 × 309,688.31
4. Step 4: Simplify right side
   144,182.53x = 95,906,850,899.10
5. Step 5: Solve for x
   x = 95,906,850,899.10/144,182.53
6. Step 6: Final answer
   x = 665,176.63