Finding the Third Proportional to 19,320 and 30,612

Step by Step Solution

1. Step 1: Write the proportion equation
   19,320 : 30,612 = 30,612 : x
2. Step 2: Convert to fraction form
   19,320/30,612 = 30,612/x
3. Step 3: Cross multiply
   19,320x = 30,612 × 30,612
4. Step 4: Simplify right side
   19,320x = 937,094,544
5. Step 5: Solve for x
   x = 937,094,544/19,320
6. Step 6: Final answer
   x = 48,503.86