Finding the Third Proportional to 8,263,564 and 12,826,426

Step by Step Solution

1. Step 1: Write the proportion equation
   8,263,564 : 12,826,426 = 12,826,426 : x
2. Step 2: Convert to fraction form
   8,263,564/12,826,426 = 12,826,426/x
3. Step 3: Cross multiply
   8,263,564x = 12,826,426 × 12,826,426
4. Step 4: Simplify right side
   8,263,564x = 164,517,203,933,476
5. Step 5: Solve for x
   x = 164,517,203,933,476/8,263,564
6. Step 6: Final answer
   x = 19,908,746.87