Finding the Third Proportional to 430,086 and 683,266.50

Step by Step Solution

1. Step 1: Write the proportion equation
   430,086 : 683,266.50 = 683,266.50 : x
2. Step 2: Convert to fraction form
   430,086/683,266.50 = 683,266.50/x
3. Step 3: Cross multiply
   430,086x = 683,266.50 × 683,266.50
4. Step 4: Simplify right side
   430,086x = 466,853,110,022.25
5. Step 5: Solve for x
   x = 466,853,110,022.25/430,086
6. Step 6: Final answer
   x = 1,085,487.81