Finding the Third Proportional to 7,769,609 and 12,161,311

Step by Step Solution

1. Step 1: Write the proportion equation
   7,769,609 : 12,161,311 = 12,161,311 : x
2. Step 2: Convert to fraction form
   7,769,609/12,161,311 = 12,161,311/x
3. Step 3: Cross multiply
   7,769,609x = 12,161,311 × 12,161,311
4. Step 4: Simplify right side
   7,769,609x = 147,897,485,238,721
5. Step 5: Solve for x
   x = 147,897,485,238,721/7,769,609
6. Step 6: Final answer
   x = 19,035,383.28