Finding the Third Proportional to 7,769,612 and 12,161,315

Step by Step Solution

1. Step 1: Write the proportion equation
   7,769,612 : 12,161,315 = 12,161,315 : x
2. Step 2: Convert to fraction form
   7,769,612/12,161,315 = 12,161,315/x
3. Step 3: Cross multiply
   7,769,612x = 12,161,315 × 12,161,315
4. Step 4: Simplify right side
   7,769,612x = 147,897,582,529,225
5. Step 5: Solve for x
   x = 147,897,582,529,225/7,769,612
6. Step 6: Final answer
   x = 19,035,388.45