Finding the Third Proportional to 13,691,834 and 19,578,051

Step by Step Solution

1. Step 1: Write the proportion equation
   13,691,834 : 19,578,051 = 19,578,051 : x
2. Step 2: Convert to fraction form
   13,691,834/19,578,051 = 19,578,051/x
3. Step 3: Cross multiply
   13,691,834x = 19,578,051 × 19,578,051
4. Step 4: Simplify right side
   13,691,834x = 383,300,080,958,601
5. Step 5: Solve for x
   x = 383,300,080,958,601/13,691,834
6. Step 6: Final answer
   x = 27,994,794.63