Finding the Third Proportional to 144,938 and 309,780

Step by Step Solution

1. Step 1: Write the proportion equation
   144,938 : 309,780 = 309,780 : x
2. Step 2: Convert to fraction form
   144,938/309,780 = 309,780/x
3. Step 3: Cross multiply
   144,938x = 309,780 × 309,780
4. Step 4: Simplify right side
   144,938x = 95,963,648,400
5. Step 5: Solve for x
   x = 95,963,648,400/144,938
6. Step 6: Final answer
   x = 662,101.37