Finding the Third Proportional to 16,263,164 and 21,681,273

Step by Step Solution

1. Step 1: Write the proportion equation
   16,263,164 : 21,681,273 = 21,681,273 : x
2. Step 2: Convert to fraction form
   16,263,164/21,681,273 = 21,681,273/x
3. Step 3: Cross multiply
   16,263,164x = 21,681,273 × 21,681,273
4. Step 4: Simplify right side
   16,263,164x = 470,077,598,900,529
5. Step 5: Solve for x
   x = 470,077,598,900,529/16,263,164
6. Step 6: Final answer
   x = 28,904,436.98