Finding the Third Proportional to 144,113.63 and 309,548.25

Step by Step Solution

1. Step 1: Write the proportion equation
   144,113.63 : 309,548.25 = 309,548.25 : x
2. Step 2: Convert to fraction form
   144,113.63/309,548.25 = 309,548.25/x
3. Step 3: Cross multiply
   144,113.63x = 309,548.25 × 309,548.25
4. Step 4: Simplify right side
   144,113.63x = 95,820,119,078.06
5. Step 5: Solve for x
   x = 95,820,119,078.06/144,113.63
6. Step 6: Final answer
   x = 664,892.85