Finding the Third Proportional to 139,394.50 and 221,552

Step by Step Solution

1. Step 1: Write the proportion equation
   139,394.50 : 221,552 = 221,552 : x
2. Step 2: Convert to fraction form
   139,394.50/221,552 = 221,552/x
3. Step 3: Cross multiply
   139,394.50x = 221,552 × 221,552
4. Step 4: Simplify right side
   139,394.50x = 49,085,288,704
5. Step 5: Solve for x
   x = 49,085,288,704/139,394.50
6. Step 6: Final answer
   x = 352,132.18