Finding the Third Proportional to 8,578,606 and 13,068,912

Step by Step Solution

1. Step 1: Write the proportion equation
   8,578,606 : 13,068,912 = 13,068,912 : x
2. Step 2: Convert to fraction form
   8,578,606/13,068,912 = 13,068,912/x
3. Step 3: Cross multiply
   8,578,606x = 13,068,912 × 13,068,912
4. Step 4: Simplify right side
   8,578,606x = 170,796,460,863,744
5. Step 5: Solve for x
   x = 170,796,460,863,744/8,578,606
6. Step 6: Final answer
   x = 19,909,582.15