Finding the Third Proportional to 231,763 and 558,144

Step by Step Solution

1. Step 1: Write the proportion equation
   231,763 : 558,144 = 558,144 : x
2. Step 2: Convert to fraction form
   231,763/558,144 = 558,144/x
3. Step 3: Cross multiply
   231,763x = 558,144 × 558,144
4. Step 4: Simplify right side
   231,763x = 311,524,724,736
5. Step 5: Solve for x
   x = 311,524,724,736/231,763
6. Step 6: Final answer
   x = 1,344,152.11