Finding the Third Proportional to 142,435 and 211,456.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,435 : 211,456.50 = 211,456.50 : x
2. Step 2: Convert to fraction form
   142,435/211,456.50 = 211,456.50/x
3. Step 3: Cross multiply
   142,435x = 211,456.50 × 211,456.50
4. Step 4: Simplify right side
   142,435x = 44,713,851,392.25
5. Step 5: Solve for x
   x = 44,713,851,392.25/142,435
6. Step 6: Final answer
   x = 313,924.61