Finding the Third Proportional to 210,036 and 282,978

Step by Step Solution

1. Step 1: Write the proportion equation
   210,036 : 282,978 = 282,978 : x
2. Step 2: Convert to fraction form
   210,036/282,978 = 282,978/x
3. Step 3: Cross multiply
   210,036x = 282,978 × 282,978
4. Step 4: Simplify right side
   210,036x = 80,076,548,484
5. Step 5: Solve for x
   x = 80,076,548,484/210,036
6. Step 6: Final answer
   x = 381,251.54