Finding the Third Proportional to 273,056 and 427,404

Step by Step Solution

1. Step 1: Write the proportion equation
   273,056 : 427,404 = 427,404 : x
2. Step 2: Convert to fraction form
   273,056/427,404 = 427,404/x
3. Step 3: Cross multiply
   273,056x = 427,404 × 427,404
4. Step 4: Simplify right side
   273,056x = 182,674,179,216
5. Step 5: Solve for x
   x = 182,674,179,216/273,056
6. Step 6: Final answer
   x = 668,998.96