Finding the Third Proportional to 30,087 and 42,399

Step by Step Solution

1. Step 1: Write the proportion equation
   30,087 : 42,399 = 42,399 : x
2. Step 2: Convert to fraction form
   30,087/42,399 = 42,399/x
3. Step 3: Cross multiply
   30,087x = 42,399 × 42,399
4. Step 4: Simplify right side
   30,087x = 1,797,675,201
5. Step 5: Solve for x
   x = 1,797,675,201/30,087
6. Step 6: Final answer
   x = 59,749.23