Finding the Third Proportional to 144,993 and 221,822.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,993 : 221,822.50 = 221,822.50 : x
2. Step 2: Convert to fraction form
   144,993/221,822.50 = 221,822.50/x
3. Step 3: Cross multiply
   144,993x = 221,822.50 × 221,822.50
4. Step 4: Simplify right side
   144,993x = 49,205,221,506.25
5. Step 5: Solve for x
   x = 49,205,221,506.25/144,993
6. Step 6: Final answer
   x = 339,362.74