Finding the Third Proportional to 4,138,780 and 9,047,384

Step by Step Solution

1. Step 1: Write the proportion equation
   4,138,780 : 9,047,384 = 9,047,384 : x
2. Step 2: Convert to fraction form
   4,138,780/9,047,384 = 9,047,384/x
3. Step 3: Cross multiply
   4,138,780x = 9,047,384 × 9,047,384
4. Step 4: Simplify right side
   4,138,780x = 81,855,157,243,456
5. Step 5: Solve for x
   x = 81,855,157,243,456/4,138,780
6. Step 6: Final answer
   x = 19,777,605.30