Finding the Third Proportional to 142,860 and 213,592

Step by Step Solution

1. Step 1: Write the proportion equation
   142,860 : 213,592 = 213,592 : x
2. Step 2: Convert to fraction form
   142,860/213,592 = 213,592/x
3. Step 3: Cross multiply
   142,860x = 213,592 × 213,592
4. Step 4: Simplify right side
   142,860x = 45,621,542,464
5. Step 5: Solve for x
   x = 45,621,542,464/142,860
6. Step 6: Final answer
   x = 319,344.41