Finding the Third Proportional to 63,960 and 139,120

Step by Step Solution

1. Step 1: Write the proportion equation
   63,960 : 139,120 = 139,120 : x
2. Step 2: Convert to fraction form
   63,960/139,120 = 139,120/x
3. Step 3: Cross multiply
   63,960x = 139,120 × 139,120
4. Step 4: Simplify right side
   63,960x = 19,354,374,400
5. Step 5: Solve for x
   x = 19,354,374,400/63,960
6. Step 6: Final answer
   x = 302,601.23