Finding the Third Proportional to 11,726,642 and 17,938,707

Step by Step Solution

1. Step 1: Write the proportion equation
   11,726,642 : 17,938,707 = 17,938,707 : x
2. Step 2: Convert to fraction form
   11,726,642/17,938,707 = 17,938,707/x
3. Step 3: Cross multiply
   11,726,642x = 17,938,707 × 17,938,707
4. Step 4: Simplify right side
   11,726,642x = 321,797,208,831,849
5. Step 5: Solve for x
   x = 321,797,208,831,849/11,726,642
6. Step 6: Final answer
   x = 27,441,547.96