Finding the Third Proportional to 3,855,187 and 8,144,390

Step by Step Solution

1. Step 1: Write the proportion equation
   3,855,187 : 8,144,390 = 8,144,390 : x
2. Step 2: Convert to fraction form
   3,855,187/8,144,390 = 8,144,390/x
3. Step 3: Cross multiply
   3,855,187x = 8,144,390 × 8,144,390
4. Step 4: Simplify right side
   3,855,187x = 66,331,088,472,100
5. Step 5: Solve for x
   x = 66,331,088,472,100/3,855,187
6. Step 6: Final answer
   x = 17,205,673.41