Finding the Third Proportional to 8,400,510 and 18,321,469.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,400,510 : 18,321,469.50 = 18,321,469.50 : x
2. Step 2: Convert to fraction form
   8,400,510/18,321,469.50 = 18,321,469.50/x
3. Step 3: Cross multiply
   8,400,510x = 18,321,469.50 × 18,321,469.50
4. Step 4: Simplify right side
   8,400,510x = 335,676,244,639,430.25
5. Step 5: Solve for x
   x = 335,676,244,639,430.25/8,400,510
6. Step 6: Final answer
   x = 39,959,031.61