Finding the Third Proportional to 3,969,908 and 8,611,826

Step by Step Solution

1. Step 1: Write the proportion equation
   3,969,908 : 8,611,826 = 8,611,826 : x
2. Step 2: Convert to fraction form
   3,969,908/8,611,826 = 8,611,826/x
3. Step 3: Cross multiply
   3,969,908x = 8,611,826 × 8,611,826
4. Step 4: Simplify right side
   3,969,908x = 74,163,547,054,276
5. Step 5: Solve for x
   x = 74,163,547,054,276/3,969,908
6. Step 6: Final answer
   x = 18,681,427.14