Finding the Third Proportional to 8,690,180 and 13,147,096

Step by Step Solution

1. Step 1: Write the proportion equation
   8,690,180 : 13,147,096 = 13,147,096 : x
2. Step 2: Convert to fraction form
   8,690,180/13,147,096 = 13,147,096/x
3. Step 3: Cross multiply
   8,690,180x = 13,147,096 × 13,147,096
4. Step 4: Simplify right side
   8,690,180x = 172,846,133,233,216
5. Step 5: Solve for x
   x = 172,846,133,233,216/8,690,180
6. Step 6: Final answer
   x = 19,889,821.99