Finding the Third Proportional to 5,196,636 and 8,163,342

Step by Step Solution

1. Step 1: Write the proportion equation
   5,196,636 : 8,163,342 = 8,163,342 : x
2. Step 2: Convert to fraction form
   5,196,636/8,163,342 = 8,163,342/x
3. Step 3: Cross multiply
   5,196,636x = 8,163,342 × 8,163,342
4. Step 4: Simplify right side
   5,196,636x = 66,640,152,608,964
5. Step 5: Solve for x
   x = 66,640,152,608,964/5,196,636
6. Step 6: Final answer
   x = 12,823,709.92