Finding the Third Proportional to 8,509,772 and 12,734,584

Step by Step Solution

1. Step 1: Write the proportion equation
   8,509,772 : 12,734,584 = 12,734,584 : x
2. Step 2: Convert to fraction form
   8,509,772/12,734,584 = 12,734,584/x
3. Step 3: Cross multiply
   8,509,772x = 12,734,584 × 12,734,584
4. Step 4: Simplify right side
   8,509,772x = 162,169,629,653,056
5. Step 5: Solve for x
   x = 162,169,629,653,056/8,509,772
6. Step 6: Final answer
   x = 19,056,871.28