Finding the Third Proportional to 16,263,162 and 21,681,270

Step by Step Solution

1. Step 1: Write the proportion equation
   16,263,162 : 21,681,270 = 21,681,270 : x
2. Step 2: Convert to fraction form
   16,263,162/21,681,270 = 21,681,270/x
3. Step 3: Cross multiply
   16,263,162x = 21,681,270 × 21,681,270
4. Step 4: Simplify right side
   16,263,162x = 470,077,468,812,900
5. Step 5: Solve for x
   x = 470,077,468,812,900/16,263,162
6. Step 6: Final answer
   x = 28,904,432.53