Finding the Third Proportional to 353,709 and 500,008.50

Step by Step Solution

1. Step 1: Write the proportion equation
   353,709 : 500,008.50 = 500,008.50 : x
2. Step 2: Convert to fraction form
   353,709/500,008.50 = 500,008.50/x
3. Step 3: Cross multiply
   353,709x = 500,008.50 × 500,008.50
4. Step 4: Simplify right side
   353,709x = 250,008,500,072.25
5. Step 5: Solve for x
   x = 250,008,500,072.25/353,709
6. Step 6: Final answer
   x = 706,819.73