Finding the Third Proportional to 139,538.50 and 222,772

Step by Step Solution

1. Step 1: Write the proportion equation
   139,538.50 : 222,772 = 222,772 : x
2. Step 2: Convert to fraction form
   139,538.50/222,772 = 222,772/x
3. Step 3: Cross multiply
   139,538.50x = 222,772 × 222,772
4. Step 4: Simplify right side
   139,538.50x = 49,627,363,984
5. Step 5: Solve for x
   x = 49,627,363,984/139,538.50
6. Step 6: Final answer
   x = 355,653.56