Finding the Third Proportional to 3,929,122 and 8,588,669

Step by Step Solution

1. Step 1: Write the proportion equation
   3,929,122 : 8,588,669 = 8,588,669 : x
2. Step 2: Convert to fraction form
   3,929,122/8,588,669 = 8,588,669/x
3. Step 3: Cross multiply
   3,929,122x = 8,588,669 × 8,588,669
4. Step 4: Simplify right side
   3,929,122x = 73,765,235,191,561
5. Step 5: Solve for x
   x = 73,765,235,191,561/3,929,122
6. Step 6: Final answer
   x = 18,773,974.23