Finding the Third Proportional to 54,614.25 and 86,838.75

Step by Step Solution

1. Step 1: Write the proportion equation
   54,614.25 : 86,838.75 = 86,838.75 : x
2. Step 2: Convert to fraction form
   54,614.25/86,838.75 = 86,838.75/x
3. Step 3: Cross multiply
   54,614.25x = 86,838.75 × 86,838.75
4. Step 4: Simplify right side
   54,614.25x = 7,540,968,501.56
5. Step 5: Solve for x
   x = 7,540,968,501.56/54,614.25
6. Step 6: Final answer
   x = 138,076.94