Finding the Third Proportional to 3,908,085 and 8,484,606

Step by Step Solution

1. Step 1: Write the proportion equation
   3,908,085 : 8,484,606 = 8,484,606 : x
2. Step 2: Convert to fraction form
   3,908,085/8,484,606 = 8,484,606/x
3. Step 3: Cross multiply
   3,908,085x = 8,484,606 × 8,484,606
4. Step 4: Simplify right side
   3,908,085x = 71,988,538,975,236
5. Step 5: Solve for x
   x = 71,988,538,975,236/3,908,085
6. Step 6: Final answer
   x = 18,420,412.80