Finding the Third Proportional to 210,370 and 459,290

Step by Step Solution

1. Step 1: Write the proportion equation
   210,370 : 459,290 = 459,290 : x
2. Step 2: Convert to fraction form
   210,370/459,290 = 459,290/x
3. Step 3: Cross multiply
   210,370x = 459,290 × 459,290
4. Step 4: Simplify right side
   210,370x = 210,947,304,100
5. Step 5: Solve for x
   x = 210,947,304,100/210,370
6. Step 6: Final answer
   x = 1,002,744.23