Finding the Third Proportional to 61,228.50 and 89,745.75

Step by Step Solution

1. Step 1: Write the proportion equation
   61,228.50 : 89,745.75 = 89,745.75 : x
2. Step 2: Convert to fraction form
   61,228.50/89,745.75 = 89,745.75/x
3. Step 3: Cross multiply
   61,228.50x = 89,745.75 × 89,745.75
4. Step 4: Simplify right side
   61,228.50x = 8,054,299,643.06
5. Step 5: Solve for x
   x = 8,054,299,643.06/61,228.50
6. Step 6: Final answer
   x = 131,544.94