Finding the Third Proportional to 16,263,182 and 21,681,291

Step by Step Solution

1. Step 1: Write the proportion equation
   16,263,182 : 21,681,291 = 21,681,291 : x
2. Step 2: Convert to fraction form
   16,263,182/21,681,291 = 21,681,291/x
3. Step 3: Cross multiply
   16,263,182x = 21,681,291 × 21,681,291
4. Step 4: Simplify right side
   16,263,182x = 470,078,379,426,681
5. Step 5: Solve for x
   x = 470,078,379,426,681/16,263,182
6. Step 6: Final answer
   x = 28,904,452.98