Finding the Third Proportional to 4,262,456 and 9,131,440

Step by Step Solution

1. Step 1: Write the proportion equation
   4,262,456 : 9,131,440 = 9,131,440 : x
2. Step 2: Convert to fraction form
   4,262,456/9,131,440 = 9,131,440/x
3. Step 3: Cross multiply
   4,262,456x = 9,131,440 × 9,131,440
4. Step 4: Simplify right side
   4,262,456x = 83,383,196,473,600
5. Step 5: Solve for x
   x = 83,383,196,473,600/4,262,456
6. Step 6: Final answer
   x = 19,562,242.16