Finding the Third Proportional to 263,262 and 513,401.50

Step by Step Solution

1. Step 1: Write the proportion equation
   263,262 : 513,401.50 = 513,401.50 : x
2. Step 2: Convert to fraction form
   263,262/513,401.50 = 513,401.50/x
3. Step 3: Cross multiply
   263,262x = 513,401.50 × 513,401.50
4. Step 4: Simplify right side
   263,262x = 263,581,100,202.25
5. Step 5: Solve for x
   x = 263,581,100,202.25/263,262
6. Step 6: Final answer
   x = 1,001,212.10