Finding the Third Proportional to 63,494 and 139,450

Step by Step Solution

1. Step 1: Write the proportion equation
   63,494 : 139,450 = 139,450 : x
2. Step 2: Convert to fraction form
   63,494/139,450 = 139,450/x
3. Step 3: Cross multiply
   63,494x = 139,450 × 139,450
4. Step 4: Simplify right side
   63,494x = 19,446,302,500
5. Step 5: Solve for x
   x = 19,446,302,500/63,494
6. Step 6: Final answer
   x = 306,269.92