Finding the Third Proportional to 3,958,227 and 8,645,202

Step by Step Solution

1. Step 1: Write the proportion equation
   3,958,227 : 8,645,202 = 8,645,202 : x
2. Step 2: Convert to fraction form
   3,958,227/8,645,202 = 8,645,202/x
3. Step 3: Cross multiply
   3,958,227x = 8,645,202 × 8,645,202
4. Step 4: Simplify right side
   3,958,227x = 74,739,517,620,804
5. Step 5: Solve for x
   x = 74,739,517,620,804/3,958,227
6. Step 6: Final answer
   x = 18,882,069.58