Finding the Third Proportional to 8,684,367 and 12,773,949

Step by Step Solution

1. Step 1: Write the proportion equation
   8,684,367 : 12,773,949 = 12,773,949 : x
2. Step 2: Convert to fraction form
   8,684,367/12,773,949 = 12,773,949/x
3. Step 3: Cross multiply
   8,684,367x = 12,773,949 × 12,773,949
4. Step 4: Simplify right side
   8,684,367x = 163,173,773,054,601
5. Step 5: Solve for x
   x = 163,173,773,054,601/8,684,367
6. Step 6: Final answer
   x = 18,789,368.65