Finding the Third Proportional to 142,860 and 313,932

Step by Step Solution

1. Step 1: Write the proportion equation
   142,860 : 313,932 = 313,932 : x
2. Step 2: Convert to fraction form
   142,860/313,932 = 313,932/x
3. Step 3: Cross multiply
   142,860x = 313,932 × 313,932
4. Step 4: Simplify right side
   142,860x = 98,553,300,624
5. Step 5: Solve for x
   x = 98,553,300,624/142,860
6. Step 6: Final answer
   x = 689,859.31