Finding the Third Proportional to 234,290 and 510,988

Step by Step Solution

1. Step 1: Write the proportion equation
   234,290 : 510,988 = 510,988 : x
2. Step 2: Convert to fraction form
   234,290/510,988 = 510,988/x
3. Step 3: Cross multiply
   234,290x = 510,988 × 510,988
4. Step 4: Simplify right side
   234,290x = 261,108,736,144
5. Step 5: Solve for x
   x = 261,108,736,144/234,290
6. Step 6: Final answer
   x = 1,114,468.12