Finding the Third Proportional to 3,908,076 and 8,484,591

Step by Step Solution

1. Step 1: Write the proportion equation
   3,908,076 : 8,484,591 = 8,484,591 : x
2. Step 2: Convert to fraction form
   3,908,076/8,484,591 = 8,484,591/x
3. Step 3: Cross multiply
   3,908,076x = 8,484,591 × 8,484,591
4. Step 4: Simplify right side
   3,908,076x = 71,988,284,437,281
5. Step 5: Solve for x
   x = 71,988,284,437,281/3,908,076
6. Step 6: Final answer
   x = 18,420,390.09