Finding the Third Proportional to 143,878.50 and 213,027

Step by Step Solution

1. Step 1: Write the proportion equation
   143,878.50 : 213,027 = 213,027 : x
2. Step 2: Convert to fraction form
   143,878.50/213,027 = 213,027/x
3. Step 3: Cross multiply
   143,878.50x = 213,027 × 213,027
4. Step 4: Simplify right side
   143,878.50x = 45,380,502,729
5. Step 5: Solve for x
   x = 45,380,502,729/143,878.50
6. Step 6: Final answer
   x = 315,408.51