Finding the Third Proportional to 63,467 and 139,390

Step by Step Solution

1. Step 1: Write the proportion equation
   63,467 : 139,390 = 139,390 : x
2. Step 2: Convert to fraction form
   63,467/139,390 = 139,390/x
3. Step 3: Cross multiply
   63,467x = 139,390 × 139,390
4. Step 4: Simplify right side
   63,467x = 19,429,572,100
5. Step 5: Solve for x
   x = 19,429,572,100/63,467
6. Step 6: Final answer
   x = 306,136.61