Finding the Third Proportional to 55,174.50 and 87,426

Step by Step Solution

1. Step 1: Write the proportion equation
   55,174.50 : 87,426 = 87,426 : x
2. Step 2: Convert to fraction form
   55,174.50/87,426 = 87,426/x
3. Step 3: Cross multiply
   55,174.50x = 87,426 × 87,426
4. Step 4: Simplify right side
   55,174.50x = 7,643,305,476
5. Step 5: Solve for x
   x = 7,643,305,476/55,174.50
6. Step 6: Final answer
   x = 138,529.67