Finding the Third Proportional to 6,643,123 and 9,930,009

Step by Step Solution

1. Step 1: Write the proportion equation
   6,643,123 : 9,930,009 = 9,930,009 : x
2. Step 2: Convert to fraction form
   6,643,123/9,930,009 = 9,930,009/x
3. Step 3: Cross multiply
   6,643,123x = 9,930,009 × 9,930,009
4. Step 4: Simplify right side
   6,643,123x = 98,605,078,740,081
5. Step 5: Solve for x
   x = 98,605,078,740,081/6,643,123
6. Step 6: Final answer
   x = 14,843,181.25