Finding the Third Proportional to 55,603.50 and 86,226.75

Step by Step Solution

1. Step 1: Write the proportion equation
   55,603.50 : 86,226.75 = 86,226.75 : x
2. Step 2: Convert to fraction form
   55,603.50/86,226.75 = 86,226.75/x
3. Step 3: Cross multiply
   55,603.50x = 86,226.75 × 86,226.75
4. Step 4: Simplify right side
   55,603.50x = 7,435,052,415.56
5. Step 5: Solve for x
   x = 7,435,052,415.56/55,603.50
6. Step 6: Final answer
   x = 133,715.55