Finding the Third Proportional to 4,557,578 and 9,962,072

Step by Step Solution

1. Step 1: Write the proportion equation
   4,557,578 : 9,962,072 = 9,962,072 : x
2. Step 2: Convert to fraction form
   4,557,578/9,962,072 = 9,962,072/x
3. Step 3: Cross multiply
   4,557,578x = 9,962,072 × 9,962,072
4. Step 4: Simplify right side
   4,557,578x = 99,242,878,533,184
5. Step 5: Solve for x
   x = 99,242,878,533,184/4,557,578
6. Step 6: Final answer
   x = 21,775,354.92