Finding the Third Proportional to 114,978 and 243,870

Step by Step Solution

1. Step 1: Write the proportion equation
   114,978 : 243,870 = 243,870 : x
2. Step 2: Convert to fraction form
   114,978/243,870 = 243,870/x
3. Step 3: Cross multiply
   114,978x = 243,870 × 243,870
4. Step 4: Simplify right side
   114,978x = 59,472,576,900
5. Step 5: Solve for x
   x = 59,472,576,900/114,978
6. Step 6: Final answer
   x = 517,251.80