Finding the Third Proportional to 407,818 and 622,095

Step by Step Solution

1. Step 1: Write the proportion equation
   407,818 : 622,095 = 622,095 : x
2. Step 2: Convert to fraction form
   407,818/622,095 = 622,095/x
3. Step 3: Cross multiply
   407,818x = 622,095 × 622,095
4. Step 4: Simplify right side
   407,818x = 387,002,189,025
5. Step 5: Solve for x
   x = 387,002,189,025/407,818
6. Step 6: Final answer
   x = 948,958.09