Finding the Third Proportional to 55,498.50 and 87,723

Step by Step Solution

1. Step 1: Write the proportion equation
   55,498.50 : 87,723 = 87,723 : x
2. Step 2: Convert to fraction form
   55,498.50/87,723 = 87,723/x
3. Step 3: Cross multiply
   55,498.50x = 87,723 × 87,723
4. Step 4: Simplify right side
   55,498.50x = 7,695,324,729
5. Step 5: Solve for x
   x = 7,695,324,729/55,498.50
6. Step 6: Final answer
   x = 138,658.25