Finding the Third Proportional to 5,196,312 and 8,162,856

Step by Step Solution

1. Step 1: Write the proportion equation
   5,196,312 : 8,162,856 = 8,162,856 : x
2. Step 2: Convert to fraction form
   5,196,312/8,162,856 = 8,162,856/x
3. Step 3: Cross multiply
   5,196,312x = 8,162,856 × 8,162,856
4. Step 4: Simplify right side
   5,196,312x = 66,632,218,076,736
5. Step 5: Solve for x
   x = 66,632,218,076,736/5,196,312
6. Step 6: Final answer
   x = 12,822,982.55