Finding the Third Proportional to 8,561,176 and 19,979,789

Step by Step Solution

1. Step 1: Write the proportion equation
   8,561,176 : 19,979,789 = 19,979,789 : x
2. Step 2: Convert to fraction form
   8,561,176/19,979,789 = 19,979,789/x
3. Step 3: Cross multiply
   8,561,176x = 19,979,789 × 19,979,789
4. Step 4: Simplify right side
   8,561,176x = 399,191,968,484,521
5. Step 5: Solve for x
   x = 399,191,968,484,521/8,561,176
6. Step 6: Final answer
   x = 46,628,169.83