Finding the Third Proportional to 8,256,690 and 12,753,180

Step by Step Solution

1. Step 1: Write the proportion equation
   8,256,690 : 12,753,180 = 12,753,180 : x
2. Step 2: Convert to fraction form
   8,256,690/12,753,180 = 12,753,180/x
3. Step 3: Cross multiply
   8,256,690x = 12,753,180 × 12,753,180
4. Step 4: Simplify right side
   8,256,690x = 162,643,600,112,400
5. Step 5: Solve for x
   x = 162,643,600,112,400/8,256,690
6. Step 6: Final answer
   x = 19,698,402.16