Finding the Third Proportional to 11,137,329 and 17,721,864

Step by Step Solution

1. Step 1: Write the proportion equation
   11,137,329 : 17,721,864 = 17,721,864 : x
2. Step 2: Convert to fraction form
   11,137,329/17,721,864 = 17,721,864/x
3. Step 3: Cross multiply
   11,137,329x = 17,721,864 × 17,721,864
4. Step 4: Simplify right side
   11,137,329x = 314,064,463,634,496
5. Step 5: Solve for x
   x = 314,064,463,634,496/11,137,329
6. Step 6: Final answer
   x = 28,199,262.47