Finding the Third Proportional to 6,171,664 and 12,644,000

Step by Step Solution

1. Step 1: Write the proportion equation
   6,171,664 : 12,644,000 = 12,644,000 : x
2. Step 2: Convert to fraction form
   6,171,664/12,644,000 = 12,644,000/x
3. Step 3: Cross multiply
   6,171,664x = 12,644,000 × 12,644,000
4. Step 4: Simplify right side
   6,171,664x = 159,870,736,000,000
5. Step 5: Solve for x
   x = 159,870,736,000,000/6,171,664
6. Step 6: Final answer
   x = 25,903,992.18