Finding the Third Proportional to 3,928,653 and 8,683,254

Step by Step Solution

1. Step 1: Write the proportion equation
   3,928,653 : 8,683,254 = 8,683,254 : x
2. Step 2: Convert to fraction form
   3,928,653/8,683,254 = 8,683,254/x
3. Step 3: Cross multiply
   3,928,653x = 8,683,254 × 8,683,254
4. Step 4: Simplify right side
   3,928,653x = 75,398,900,028,516
5. Step 5: Solve for x
   x = 75,398,900,028,516/3,928,653
6. Step 6: Final answer
   x = 19,192,048.78