Finding the Third Proportional to 144,691 and 300,470

Step by Step Solution

1. Step 1: Write the proportion equation
   144,691 : 300,470 = 300,470 : x
2. Step 2: Convert to fraction form
   144,691/300,470 = 300,470/x
3. Step 3: Cross multiply
   144,691x = 300,470 × 300,470
4. Step 4: Simplify right side
   144,691x = 90,282,220,900
5. Step 5: Solve for x
   x = 90,282,220,900/144,691
6. Step 6: Final answer
   x = 623,965.70