Finding the Third Proportional to 4,157,621 and 8,889,786

Step by Step Solution

1. Step 1: Write the proportion equation
   4,157,621 : 8,889,786 = 8,889,786 : x
2. Step 2: Convert to fraction form
   4,157,621/8,889,786 = 8,889,786/x
3. Step 3: Cross multiply
   4,157,621x = 8,889,786 × 8,889,786
4. Step 4: Simplify right side
   4,157,621x = 79,028,295,125,796
5. Step 5: Solve for x
   x = 79,028,295,125,796/4,157,621
6. Step 6: Final answer
   x = 19,008,056.56