Finding the Third Proportional to 210,969.50 and 281,819.50

Step by Step Solution

1. Step 1: Write the proportion equation
   210,969.50 : 281,819.50 = 281,819.50 : x
2. Step 2: Convert to fraction form
   210,969.50/281,819.50 = 281,819.50/x
3. Step 3: Cross multiply
   210,969.50x = 281,819.50 × 281,819.50
4. Step 4: Simplify right side
   210,969.50x = 79,422,230,580.25
5. Step 5: Solve for x
   x = 79,422,230,580.25/210,969.50
6. Step 6: Final answer
   x = 376,463.09