Finding the Third Proportional to 146,112 and 315,504

Step by Step Solution

1. Step 1: Write the proportion equation
   146,112 : 315,504 = 315,504 : x
2. Step 2: Convert to fraction form
   146,112/315,504 = 315,504/x
3. Step 3: Cross multiply
   146,112x = 315,504 × 315,504
4. Step 4: Simplify right side
   146,112x = 99,542,774,016
5. Step 5: Solve for x
   x = 99,542,774,016/146,112
6. Step 6: Final answer
   x = 681,277.20