Finding the Third Proportional to 6,636,678 and 14,479,816

Step by Step Solution

1. Step 1: Write the proportion equation
   6,636,678 : 14,479,816 = 14,479,816 : x
2. Step 2: Convert to fraction form
   6,636,678/14,479,816 = 14,479,816/x
3. Step 3: Cross multiply
   6,636,678x = 14,479,816 × 14,479,816
4. Step 4: Simplify right side
   6,636,678x = 209,665,071,393,856
5. Step 5: Solve for x
   x = 209,665,071,393,856/6,636,678
6. Step 6: Final answer
   x = 31,591,870.42