Finding the Third Proportional to 144,631.69 and 314,139.94

Step by Step Solution

1. Step 1: Write the proportion equation
   144,631.69 : 314,139.94 = 314,139.94 : x
2. Step 2: Convert to fraction form
   144,631.69/314,139.94 = 314,139.94/x
3. Step 3: Cross multiply
   144,631.69x = 314,139.94 × 314,139.94
4. Step 4: Simplify right side
   144,631.69x = 98,683,900,332.50
5. Step 5: Solve for x
   x = 98,683,900,332.50/144,631.69
6. Step 6: Final answer
   x = 682,311.75