Finding the Third Proportional to 8,908.31 and 19,603.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,908.31 : 19,603.69 = 19,603.69 : x
2. Step 2: Convert to fraction form
   8,908.31/19,603.69 = 19,603.69/x
3. Step 3: Cross multiply
   8,908.31x = 19,603.69 × 19,603.69
4. Step 4: Simplify right side
   8,908.31x = 384,304,563.60
5. Step 5: Solve for x
   x = 384,304,563.60/8,908.31
6. Step 6: Final answer
   x = 43,140.00