Finding the Third Proportional to 144,835 and 212,067.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,835 : 212,067.50 = 212,067.50 : x
2. Step 2: Convert to fraction form
   144,835/212,067.50 = 212,067.50/x
3. Step 3: Cross multiply
   144,835x = 212,067.50 × 212,067.50
4. Step 4: Simplify right side
   144,835x = 44,972,624,556.25
5. Step 5: Solve for x
   x = 44,972,624,556.25/144,835
6. Step 6: Final answer
   x = 310,509.37