Finding the Third Proportional to 11,666,640 and 18,259,848

Step by Step Solution

1. Step 1: Write the proportion equation
   11,666,640 : 18,259,848 = 18,259,848 : x
2. Step 2: Convert to fraction form
   11,666,640/18,259,848 = 18,259,848/x
3. Step 3: Cross multiply
   11,666,640x = 18,259,848 × 18,259,848
4. Step 4: Simplify right side
   11,666,640x = 333,422,048,983,104
5. Step 5: Solve for x
   x = 333,422,048,983,104/11,666,640
6. Step 6: Final answer
   x = 28,579,098.09