Finding the Third Proportional to 12,105,608 and 17,986,911

Step by Step Solution

1. Step 1: Write the proportion equation
   12,105,608 : 17,986,911 = 17,986,911 : x
2. Step 2: Convert to fraction form
   12,105,608/17,986,911 = 17,986,911/x
3. Step 3: Cross multiply
   12,105,608x = 17,986,911 × 17,986,911
4. Step 4: Simplify right side
   12,105,608x = 323,528,967,321,921
5. Step 5: Solve for x
   x = 323,528,967,321,921/12,105,608
6. Step 6: Final answer
   x = 26,725,544.67