Finding the Third Proportional to 55,174.50 and 85,588.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,174.50 : 85,588.50 = 85,588.50 : x
2. Step 2: Convert to fraction form
   55,174.50/85,588.50 = 85,588.50/x
3. Step 3: Cross multiply
   55,174.50x = 85,588.50 × 85,588.50
4. Step 4: Simplify right side
   55,174.50x = 7,325,391,332.25
5. Step 5: Solve for x
   x = 7,325,391,332.25/55,174.50
6. Step 6: Final answer
   x = 132,767.70