Finding the Third Proportional to 12,864 and 30,072

Step by Step Solution

1. Step 1: Write the proportion equation
   12,864 : 30,072 = 30,072 : x
2. Step 2: Convert to fraction form
   12,864/30,072 = 30,072/x
3. Step 3: Cross multiply
   12,864x = 30,072 × 30,072
4. Step 4: Simplify right side
   12,864x = 904,325,184
5. Step 5: Solve for x
   x = 904,325,184/12,864
6. Step 6: Final answer
   x = 70,298.91