Finding the Third Proportional to 54,249.75 and 83,991.94

Step by Step Solution

1. Step 1: Write the proportion equation
   54,249.75 : 83,991.94 = 83,991.94 : x
2. Step 2: Convert to fraction form
   54,249.75/83,991.94 = 83,991.94/x
3. Step 3: Cross multiply
   54,249.75x = 83,991.94 × 83,991.94
4. Step 4: Simplify right side
   54,249.75x = 7,054,645,565.00
5. Step 5: Solve for x
   x = 7,054,645,565.00/54,249.75
6. Step 6: Final answer
   x = 130,040.15