Finding the Third Proportional to 140,152 and 315,388

Step by Step Solution

1. Step 1: Write the proportion equation
   140,152 : 315,388 = 315,388 : x
2. Step 2: Convert to fraction form
   140,152/315,388 = 315,388/x
3. Step 3: Cross multiply
   140,152x = 315,388 × 315,388
4. Step 4: Simplify right side
   140,152x = 99,469,590,544
5. Step 5: Solve for x
   x = 99,469,590,544/140,152
6. Step 6: Final answer
   x = 709,726.52