Finding the Third Proportional to 16,245,036 and 21,563,820

Step by Step Solution

1. Step 1: Write the proportion equation
   16,245,036 : 21,563,820 = 21,563,820 : x
2. Step 2: Convert to fraction form
   16,245,036/21,563,820 = 21,563,820/x
3. Step 3: Cross multiply
   16,245,036x = 21,563,820 × 21,563,820
4. Step 4: Simplify right side
   16,245,036x = 464,998,332,992,400
5. Step 5: Solve for x
   x = 464,998,332,992,400/16,245,036
6. Step 6: Final answer
   x = 28,624,026.01