Finding the Third Proportional to 63,780.75 and 139,039.88

Step by Step Solution

1. Step 1: Write the proportion equation
   63,780.75 : 139,039.88 = 139,039.88 : x
2. Step 2: Convert to fraction form
   63,780.75/139,039.88 = 139,039.88/x
3. Step 3: Cross multiply
   63,780.75x = 139,039.88 × 139,039.88
4. Step 4: Simplify right side
   63,780.75x = 19,332,086,840.02
5. Step 5: Solve for x
   x = 19,332,086,840.02/63,780.75
6. Step 6: Final answer
   x = 303,102.22