Finding the Third Proportional to 343,071 and 490,144.50

Step by Step Solution

1. Step 1: Write the proportion equation
   343,071 : 490,144.50 = 490,144.50 : x
2. Step 2: Convert to fraction form
   343,071/490,144.50 = 490,144.50/x
3. Step 3: Cross multiply
   343,071x = 490,144.50 × 490,144.50
4. Step 4: Simplify right side
   343,071x = 240,241,630,880.25
5. Step 5: Solve for x
   x = 240,241,630,880.25/343,071
6. Step 6: Final answer
   x = 700,267.96