Finding the Third Proportional to 12,926,389 and 19,658,180

Step by Step Solution

1. Step 1: Write the proportion equation
   12,926,389 : 19,658,180 = 19,658,180 : x
2. Step 2: Convert to fraction form
   12,926,389/19,658,180 = 19,658,180/x
3. Step 3: Cross multiply
   12,926,389x = 19,658,180 × 19,658,180
4. Step 4: Simplify right side
   12,926,389x = 386,444,040,912,400
5. Step 5: Solve for x
   x = 386,444,040,912,400/12,926,389
6. Step 6: Final answer
   x = 29,895,745.90