Finding the Third Proportional to 144,888 and 221,635.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,888 : 221,635.50 = 221,635.50 : x
2. Step 2: Convert to fraction form
   144,888/221,635.50 = 221,635.50/x
3. Step 3: Cross multiply
   144,888x = 221,635.50 × 221,635.50
4. Step 4: Simplify right side
   144,888x = 49,122,294,860.25
5. Step 5: Solve for x
   x = 49,122,294,860.25/144,888
6. Step 6: Final answer
   x = 339,036.32