Finding the Third Proportional to 54,540 and 86,994

Step by Step Solution

1. Step 1: Write the proportion equation
   54,540 : 86,994 = 86,994 : x
2. Step 2: Convert to fraction form
   54,540/86,994 = 86,994/x
3. Step 3: Cross multiply
   54,540x = 86,994 × 86,994
4. Step 4: Simplify right side
   54,540x = 7,567,956,036
5. Step 5: Solve for x
   x = 7,567,956,036/54,540
6. Step 6: Final answer
   x = 138,759.74