Finding the Third Proportional to 4,071,386 and 8,477,806

Step by Step Solution

1. Step 1: Write the proportion equation
   4,071,386 : 8,477,806 = 8,477,806 : x
2. Step 2: Convert to fraction form
   4,071,386/8,477,806 = 8,477,806/x
3. Step 3: Cross multiply
   4,071,386x = 8,477,806 × 8,477,806
4. Step 4: Simplify right side
   4,071,386x = 71,873,194,573,636
5. Step 5: Solve for x
   x = 71,873,194,573,636/4,071,386
6. Step 6: Final answer
   x = 17,653,249.92