Finding the Third Proportional to 30,720 and 60,624

Step by Step Solution

1. Step 1: Write the proportion equation
   30,720 : 60,624 = 60,624 : x
2. Step 2: Convert to fraction form
   30,720/60,624 = 60,624/x
3. Step 3: Cross multiply
   30,720x = 60,624 × 60,624
4. Step 4: Simplify right side
   30,720x = 3,675,269,376
5. Step 5: Solve for x
   x = 3,675,269,376/30,720
6. Step 6: Final answer
   x = 119,637.68