Finding the Third Proportional to 139,826.25 and 221,511.38

Step by Step Solution

1. Step 1: Write the proportion equation
   139,826.25 : 221,511.38 = 221,511.38 : x
2. Step 2: Convert to fraction form
   139,826.25/221,511.38 = 221,511.38/x
3. Step 3: Cross multiply
   139,826.25x = 221,511.38 × 221,511.38
4. Step 4: Simplify right side
   139,826.25x = 49,067,289,254.39
5. Step 5: Solve for x
   x = 49,067,289,254.39/139,826.25
6. Step 6: Final answer
   x = 350,916.15