Finding the Third Proportional to 242,988 and 342,030

Step by Step Solution

1. Step 1: Write the proportion equation
   242,988 : 342,030 = 342,030 : x
2. Step 2: Convert to fraction form
   242,988/342,030 = 342,030/x
3. Step 3: Cross multiply
   242,988x = 342,030 × 342,030
4. Step 4: Simplify right side
   242,988x = 116,984,520,900
5. Step 5: Solve for x
   x = 116,984,520,900/242,988
6. Step 6: Final answer
   x = 481,441.56