Finding the Third Proportional to 276,825.50 and 433,683

Step by Step Solution

1. Step 1: Write the proportion equation
   276,825.50 : 433,683 = 433,683 : x
2. Step 2: Convert to fraction form
   276,825.50/433,683 = 433,683/x
3. Step 3: Cross multiply
   276,825.50x = 433,683 × 433,683
4. Step 4: Simplify right side
   276,825.50x = 188,080,944,489
5. Step 5: Solve for x
   x = 188,080,944,489/276,825.50
6. Step 6: Final answer
   x = 679,420.59