Finding the Third Proportional to 400,532 and 812,116

Step by Step Solution

1. Step 1: Write the proportion equation
   400,532 : 812,116 = 812,116 : x
2. Step 2: Convert to fraction form
   400,532/812,116 = 812,116/x
3. Step 3: Cross multiply
   400,532x = 812,116 × 812,116
4. Step 4: Simplify right side
   400,532x = 659,532,397,456
5. Step 5: Solve for x
   x = 659,532,397,456/400,532
6. Step 6: Final answer
   x = 1,646,640.96