Finding the Third Proportional to 55,487.25 and 86,949.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,487.25 : 86,949.50 = 86,949.50 : x
2. Step 2: Convert to fraction form
   55,487.25/86,949.50 = 86,949.50/x
3. Step 3: Cross multiply
   55,487.25x = 86,949.50 × 86,949.50
4. Step 4: Simplify right side
   55,487.25x = 7,560,215,550.25
5. Step 5: Solve for x
   x = 7,560,215,550.25/55,487.25
6. Step 6: Final answer
   x = 136,251.40