Finding the Third Proportional to 3,945,191 and 8,499,827

Step by Step Solution

1. Step 1: Write the proportion equation
   3,945,191 : 8,499,827 = 8,499,827 : x
2. Step 2: Convert to fraction form
   3,945,191/8,499,827 = 8,499,827/x
3. Step 3: Cross multiply
   3,945,191x = 8,499,827 × 8,499,827
4. Step 4: Simplify right side
   3,945,191x = 72,247,059,029,929
5. Step 5: Solve for x
   x = 72,247,059,029,929/3,945,191
6. Step 6: Final answer
   x = 18,312,689.81