Finding the Third Proportional to 5,171,688 and 8,185,086

Step by Step Solution

1. Step 1: Write the proportion equation
   5,171,688 : 8,185,086 = 8,185,086 : x
2. Step 2: Convert to fraction form
   5,171,688/8,185,086 = 8,185,086/x
3. Step 3: Cross multiply
   5,171,688x = 8,185,086 × 8,185,086
4. Step 4: Simplify right side
   5,171,688x = 66,995,632,827,396
5. Step 5: Solve for x
   x = 66,995,632,827,396/5,171,688
6. Step 6: Final answer
   x = 12,954,306.76