Finding the Third Proportional to 8,978,440 and 19,217,456

Step by Step Solution

1. Step 1: Write the proportion equation
   8,978,440 : 19,217,456 = 19,217,456 : x
2. Step 2: Convert to fraction form
   8,978,440/19,217,456 = 19,217,456/x
3. Step 3: Cross multiply
   8,978,440x = 19,217,456 × 19,217,456
4. Step 4: Simplify right side
   8,978,440x = 369,310,615,111,936
5. Step 5: Solve for x
   x = 369,310,615,111,936/8,978,440
6. Step 6: Final answer
   x = 41,133,049.29