Finding the Third Proportional to 6,378,920 and 13,643,008

Step by Step Solution

1. Step 1: Write the proportion equation
   6,378,920 : 13,643,008 = 13,643,008 : x
2. Step 2: Convert to fraction form
   6,378,920/13,643,008 = 13,643,008/x
3. Step 3: Cross multiply
   6,378,920x = 13,643,008 × 13,643,008
4. Step 4: Simplify right side
   6,378,920x = 186,131,667,288,064
5. Step 5: Solve for x
   x = 186,131,667,288,064/6,378,920
6. Step 6: Final answer
   x = 29,179,181.94