Finding the Third Proportional to 5,196,644 and 8,163,354

Step by Step Solution

1. Step 1: Write the proportion equation
   5,196,644 : 8,163,354 = 8,163,354 : x
2. Step 2: Convert to fraction form
   5,196,644/8,163,354 = 8,163,354/x
3. Step 3: Cross multiply
   5,196,644x = 8,163,354 × 8,163,354
4. Step 4: Simplify right side
   5,196,644x = 66,640,348,529,316
5. Step 5: Solve for x
   x = 66,640,348,529,316/5,196,644
6. Step 6: Final answer
   x = 12,823,727.88