Finding the Third Proportional to 55,195 and 87,436

Step by Step Solution

1. Step 1: Write the proportion equation
   55,195 : 87,436 = 87,436 : x
2. Step 2: Convert to fraction form
   55,195/87,436 = 87,436/x
3. Step 3: Cross multiply
   55,195x = 87,436 × 87,436
4. Step 4: Simplify right side
   55,195x = 7,645,054,096
5. Step 5: Solve for x
   x = 7,645,054,096/55,195
6. Step 6: Final answer
   x = 138,509.90