Finding the Third Proportional to 8,511,356 and 12,736,878

Step by Step Solution

1. Step 1: Write the proportion equation
   8,511,356 : 12,736,878 = 12,736,878 : x
2. Step 2: Convert to fraction form
   8,511,356/12,736,878 = 12,736,878/x
3. Step 3: Cross multiply
   8,511,356x = 12,736,878 × 12,736,878
4. Step 4: Simplify right side
   8,511,356x = 162,228,061,186,884
5. Step 5: Solve for x
   x = 162,228,061,186,884/8,511,356
6. Step 6: Final answer
   x = 19,060,189.84