Finding the Third Proportional to 3,785,877 and 8,213,916

Step by Step Solution

1. Step 1: Write the proportion equation
   3,785,877 : 8,213,916 = 8,213,916 : x
2. Step 2: Convert to fraction form
   3,785,877/8,213,916 = 8,213,916/x
3. Step 3: Cross multiply
   3,785,877x = 8,213,916 × 8,213,916
4. Step 4: Simplify right side
   3,785,877x = 67,468,416,055,056
5. Step 5: Solve for x
   x = 67,468,416,055,056/3,785,877
6. Step 6: Final answer
   x = 17,821,079.78