Finding the Third Proportional to 8,873,550 and 12,680,469

Step by Step Solution

1. Step 1: Write the proportion equation
   8,873,550 : 12,680,469 = 12,680,469 : x
2. Step 2: Convert to fraction form
   8,873,550/12,680,469 = 12,680,469/x
3. Step 3: Cross multiply
   8,873,550x = 12,680,469 × 12,680,469
4. Step 4: Simplify right side
   8,873,550x = 160,794,294,059,961
5. Step 5: Solve for x
   x = 160,794,294,059,961/8,873,550
6. Step 6: Final answer
   x = 18,120,627.49