Finding the Third Proportional to 4,129,955 and 8,857,767

Step by Step Solution

1. Step 1: Write the proportion equation
   4,129,955 : 8,857,767 = 8,857,767 : x
2. Step 2: Convert to fraction form
   4,129,955/8,857,767 = 8,857,767/x
3. Step 3: Cross multiply
   4,129,955x = 8,857,767 × 8,857,767
4. Step 4: Simplify right side
   4,129,955x = 78,460,036,226,289
5. Step 5: Solve for x
   x = 78,460,036,226,289/4,129,955
6. Step 6: Final answer
   x = 18,997,794.46