Finding the Third Proportional to 55,078 and 87,550.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,078 : 87,550.50 = 87,550.50 : x
2. Step 2: Convert to fraction form
   55,078/87,550.50 = 87,550.50/x
3. Step 3: Cross multiply
   55,078x = 87,550.50 × 87,550.50
4. Step 4: Simplify right side
   55,078x = 7,665,090,050.25
5. Step 5: Solve for x
   x = 7,665,090,050.25/55,078
6. Step 6: Final answer
   x = 139,167.91