Finding the Third Proportional to 3,910,206 and 8,177,931

Step by Step Solution

1. Step 1: Write the proportion equation
   3,910,206 : 8,177,931 = 8,177,931 : x
2. Step 2: Convert to fraction form
   3,910,206/8,177,931 = 8,177,931/x
3. Step 3: Cross multiply
   3,910,206x = 8,177,931 × 8,177,931
4. Step 4: Simplify right side
   3,910,206x = 66,878,555,440,761
5. Step 5: Solve for x
   x = 66,878,555,440,761/3,910,206
6. Step 6: Final answer
   x = 17,103,588.77