Finding the Third Proportional to 4,283,486 and 9,313,456

Step by Step Solution

1. Step 1: Write the proportion equation
   4,283,486 : 9,313,456 = 9,313,456 : x
2. Step 2: Convert to fraction form
   4,283,486/9,313,456 = 9,313,456/x
3. Step 3: Cross multiply
   4,283,486x = 9,313,456 × 9,313,456
4. Step 4: Simplify right side
   4,283,486x = 86,740,462,663,936
5. Step 5: Solve for x
   x = 86,740,462,663,936/4,283,486
6. Step 6: Final answer
   x = 20,249,969.92