Finding the Third Proportional to 3,908,061 and 8,484,561

Step by Step Solution

1. Step 1: Write the proportion equation
   3,908,061 : 8,484,561 = 8,484,561 : x
2. Step 2: Convert to fraction form
   3,908,061/8,484,561 = 8,484,561/x
3. Step 3: Cross multiply
   3,908,061x = 8,484,561 × 8,484,561
4. Step 4: Simplify right side
   3,908,061x = 71,987,775,362,721
5. Step 5: Solve for x
   x = 71,987,775,362,721/3,908,061
6. Step 6: Final answer
   x = 18,420,330.53