Finding the Third Proportional to 9,173,016 and 21,420,540

Step by Step Solution

1. Step 1: Write the proportion equation
   9,173,016 : 21,420,540 = 21,420,540 : x
2. Step 2: Convert to fraction form
   9,173,016/21,420,540 = 21,420,540/x
3. Step 3: Cross multiply
   9,173,016x = 21,420,540 × 21,420,540
4. Step 4: Simplify right side
   9,173,016x = 458,839,533,891,600
5. Step 5: Solve for x
   x = 458,839,533,891,600/9,173,016
6. Step 6: Final answer
   x = 50,020,574.90