Finding the Third Proportional to 16,263,180 and 21,681,288

Step by Step Solution

1. Step 1: Write the proportion equation
   16,263,180 : 21,681,288 = 21,681,288 : x
2. Step 2: Convert to fraction form
   16,263,180/21,681,288 = 21,681,288/x
3. Step 3: Cross multiply
   16,263,180x = 21,681,288 × 21,681,288
4. Step 4: Simplify right side
   16,263,180x = 470,078,249,338,944
5. Step 5: Solve for x
   x = 470,078,249,338,944/16,263,180
6. Step 6: Final answer
   x = 28,904,448.54