Finding the Third Proportional to 15,678 and 30,570

Step by Step Solution

1. Step 1: Write the proportion equation
   15,678 : 30,570 = 30,570 : x
2. Step 2: Convert to fraction form
   15,678/30,570 = 30,570/x
3. Step 3: Cross multiply
   15,678x = 30,570 × 30,570
4. Step 4: Simplify right side
   15,678x = 934,524,900
5. Step 5: Solve for x
   x = 934,524,900/15,678
6. Step 6: Final answer
   x = 59,607.41