Finding the Third Proportional to 300,988 and 450,008

Step by Step Solution

1. Step 1: Write the proportion equation
   300,988 : 450,008 = 450,008 : x
2. Step 2: Convert to fraction form
   300,988/450,008 = 450,008/x
3. Step 3: Cross multiply
   300,988x = 450,008 × 450,008
4. Step 4: Simplify right side
   300,988x = 202,507,200,064
5. Step 5: Solve for x
   x = 202,507,200,064/300,988
6. Step 6: Final answer
   x = 672,808.22