Finding the Third Proportional to 3,785,318 and 8,209,512

Step by Step Solution

1. Step 1: Write the proportion equation
   3,785,318 : 8,209,512 = 8,209,512 : x
2. Step 2: Convert to fraction form
   3,785,318/8,209,512 = 8,209,512/x
3. Step 3: Cross multiply
   3,785,318x = 8,209,512 × 8,209,512
4. Step 4: Simplify right side
   3,785,318x = 67,396,087,278,144
5. Step 5: Solve for x
   x = 67,396,087,278,144/3,785,318
6. Step 6: Final answer
   x = 17,804,603.81