Finding the Third Proportional to 114,678 and 243,288

Step by Step Solution

1. Step 1: Write the proportion equation
   114,678 : 243,288 = 243,288 : x
2. Step 2: Convert to fraction form
   114,678/243,288 = 243,288/x
3. Step 3: Cross multiply
   114,678x = 243,288 × 243,288
4. Step 4: Simplify right side
   114,678x = 59,189,050,944
5. Step 5: Solve for x
   x = 59,189,050,944/114,678
6. Step 6: Final answer
   x = 516,132.57