Finding the Third Proportional to 210,960 and 281,805.75

Step by Step Solution

1. Step 1: Write the proportion equation
   210,960 : 281,805.75 = 281,805.75 : x
2. Step 2: Convert to fraction form
   210,960/281,805.75 = 281,805.75/x
3. Step 3: Cross multiply
   210,960x = 281,805.75 × 281,805.75
4. Step 4: Simplify right side
   210,960x = 79,414,480,733.06
5. Step 5: Solve for x
   x = 79,414,480,733.06/210,960
6. Step 6: Final answer
   x = 376,443.31