Finding the Third Proportional to 4,157,617 and 8,889,778

Step by Step Solution

1. Step 1: Write the proportion equation
   4,157,617 : 8,889,778 = 8,889,778 : x
2. Step 2: Convert to fraction form
   4,157,617/8,889,778 = 8,889,778/x
3. Step 3: Cross multiply
   4,157,617x = 8,889,778 × 8,889,778
4. Step 4: Simplify right side
   4,157,617x = 79,028,152,889,284
5. Step 5: Solve for x
   x = 79,028,152,889,284/4,157,617
6. Step 6: Final answer
   x = 19,008,040.64