Finding the Third Proportional to 309,118 and 659,062

Step by Step Solution

1. Step 1: Write the proportion equation
   309,118 : 659,062 = 659,062 : x
2. Step 2: Convert to fraction form
   309,118/659,062 = 659,062/x
3. Step 3: Cross multiply
   309,118x = 659,062 × 659,062
4. Step 4: Simplify right side
   309,118x = 434,362,719,844
5. Step 5: Solve for x
   x = 434,362,719,844/309,118
6. Step 6: Final answer
   x = 1,405,167.99