Finding the Third Proportional to 63,768 and 139,656.75

Step by Step Solution

1. Step 1: Write the proportion equation
   63,768 : 139,656.75 = 139,656.75 : x
2. Step 2: Convert to fraction form
   63,768/139,656.75 = 139,656.75/x
3. Step 3: Cross multiply
   63,768x = 139,656.75 × 139,656.75
4. Step 4: Simplify right side
   63,768x = 19,504,007,820.56
5. Step 5: Solve for x
   x = 19,504,007,820.56/63,768
6. Step 6: Final answer
   x = 305,858.86