Finding the Third Proportional to 8,072,284 and 12,511,920

Step by Step Solution

1. Step 1: Write the proportion equation
   8,072,284 : 12,511,920 = 12,511,920 : x
2. Step 2: Convert to fraction form
   8,072,284/12,511,920 = 12,511,920/x
3. Step 3: Cross multiply
   8,072,284x = 12,511,920 × 12,511,920
4. Step 4: Simplify right side
   8,072,284x = 156,548,142,086,400
5. Step 5: Solve for x
   x = 156,548,142,086,400/8,072,284
6. Step 6: Final answer
   x = 19,393,289.69