Finding the Third Proportional to 55,244.53 and 87,616.69

Step by Step Solution

1. Step 1: Write the proportion equation
   55,244.53 : 87,616.69 = 87,616.69 : x
2. Step 2: Convert to fraction form
   55,244.53/87,616.69 = 87,616.69/x
3. Step 3: Cross multiply
   55,244.53x = 87,616.69 × 87,616.69
4. Step 4: Simplify right side
   55,244.53x = 7,676,683,928.47
5. Step 5: Solve for x
   x = 7,676,683,928.47/55,244.53
6. Step 6: Final answer
   x = 138,958.26