Finding the Third Proportional to 7,978,646 and 17,309,996

Step by Step Solution

1. Step 1: Write the proportion equation
   7,978,646 : 17,309,996 = 17,309,996 : x
2. Step 2: Convert to fraction form
   7,978,646/17,309,996 = 17,309,996/x
3. Step 3: Cross multiply
   7,978,646x = 17,309,996 × 17,309,996
4. Step 4: Simplify right side
   7,978,646x = 299,635,961,520,016
5. Step 5: Solve for x
   x = 299,635,961,520,016/7,978,646
6. Step 6: Final answer
   x = 37,554,738.17