Finding the Third Proportional to 144,884 and 307,210

Step by Step Solution

1. Step 1: Write the proportion equation
   144,884 : 307,210 = 307,210 : x
2. Step 2: Convert to fraction form
   144,884/307,210 = 307,210/x
3. Step 3: Cross multiply
   144,884x = 307,210 × 307,210
4. Step 4: Simplify right side
   144,884x = 94,377,984,100
5. Step 5: Solve for x
   x = 94,377,984,100/144,884
6. Step 6: Final answer
   x = 651,403.77