Finding the Third Proportional to 210,853.50 and 459,144

Step by Step Solution

1. Step 1: Write the proportion equation
   210,853.50 : 459,144 = 459,144 : x
2. Step 2: Convert to fraction form
   210,853.50/459,144 = 459,144/x
3. Step 3: Cross multiply
   210,853.50x = 459,144 × 459,144
4. Step 4: Simplify right side
   210,853.50x = 210,813,212,736
5. Step 5: Solve for x
   x = 210,813,212,736/210,853.50
6. Step 6: Final answer
   x = 999,808.93