Finding the Third Proportional to 50,656.50 and 86,919.75

Step by Step Solution

1. Step 1: Write the proportion equation
   50,656.50 : 86,919.75 = 86,919.75 : x
2. Step 2: Convert to fraction form
   50,656.50/86,919.75 = 86,919.75/x
3. Step 3: Cross multiply
   50,656.50x = 86,919.75 × 86,919.75
4. Step 4: Simplify right side
   50,656.50x = 7,555,042,940.06
5. Step 5: Solve for x
   x = 7,555,042,940.06/50,656.50
6. Step 6: Final answer
   x = 149,142.62