Finding the Third Proportional to 8,978,430 and 19,217,436

Step by Step Solution

1. Step 1: Write the proportion equation
   8,978,430 : 19,217,436 = 19,217,436 : x
2. Step 2: Convert to fraction form
   8,978,430/19,217,436 = 19,217,436/x
3. Step 3: Cross multiply
   8,978,430x = 19,217,436 × 19,217,436
4. Step 4: Simplify right side
   8,978,430x = 369,309,846,414,096
5. Step 5: Solve for x
   x = 369,309,846,414,096/8,978,430
6. Step 6: Final answer
   x = 41,133,009.49