Finding the Third Proportional to 143,231 and 315,062

Step by Step Solution

1. Step 1: Write the proportion equation
   143,231 : 315,062 = 315,062 : x
2. Step 2: Convert to fraction form
   143,231/315,062 = 315,062/x
3. Step 3: Cross multiply
   143,231x = 315,062 × 315,062
4. Step 4: Simplify right side
   143,231x = 99,264,063,844
5. Step 5: Solve for x
   x = 99,264,063,844/143,231
6. Step 6: Final answer
   x = 693,034.77