Finding the Third Proportional to 139,537.50 and 222,770.25

Step by Step Solution

1. Step 1: Write the proportion equation
   139,537.50 : 222,770.25 = 222,770.25 : x
2. Step 2: Convert to fraction form
   139,537.50/222,770.25 = 222,770.25/x
3. Step 3: Cross multiply
   139,537.50x = 222,770.25 × 222,770.25
4. Step 4: Simplify right side
   139,537.50x = 49,626,584,285.06
5. Step 5: Solve for x
   x = 49,626,584,285.06/139,537.50
6. Step 6: Final answer
   x = 355,650.52