Finding the Third Proportional to 313,600 and 683,144

Step by Step Solution

1. Step 1: Write the proportion equation
   313,600 : 683,144 = 683,144 : x
2. Step 2: Convert to fraction form
   313,600/683,144 = 683,144/x
3. Step 3: Cross multiply
   313,600x = 683,144 × 683,144
4. Step 4: Simplify right side
   313,600x = 466,685,724,736
5. Step 5: Solve for x
   x = 466,685,724,736/313,600
6. Step 6: Final answer
   x = 1,488,156.01