Finding the Third Proportional to 63,375.75 and 139,144.50

Step by Step Solution

1. Step 1: Write the proportion equation
   63,375.75 : 139,144.50 = 139,144.50 : x
2. Step 2: Convert to fraction form
   63,375.75/139,144.50 = 139,144.50/x
3. Step 3: Cross multiply
   63,375.75x = 139,144.50 × 139,144.50
4. Step 4: Simplify right side
   63,375.75x = 19,361,191,880.25
5. Step 5: Solve for x
   x = 19,361,191,880.25/63,375.75
6. Step 6: Final answer
   x = 305,498.43