Finding the Third Proportional to 3,908,088 and 8,484,612

Step by Step Solution

1. Step 1: Write the proportion equation
   3,908,088 : 8,484,612 = 8,484,612 : x
2. Step 2: Convert to fraction form
   3,908,088/8,484,612 = 8,484,612/x
3. Step 3: Cross multiply
   3,908,088x = 8,484,612 × 8,484,612
4. Step 4: Simplify right side
   3,908,088x = 71,988,640,790,544
5. Step 5: Solve for x
   x = 71,988,640,790,544/3,908,088
6. Step 6: Final answer
   x = 18,420,424.72