Finding the Third Proportional to 220,250 and 334,988

Step by Step Solution

1. Step 1: Write the proportion equation
   220,250 : 334,988 = 334,988 : x
2. Step 2: Convert to fraction form
   220,250/334,988 = 334,988/x
3. Step 3: Cross multiply
   220,250x = 334,988 × 334,988
4. Step 4: Simplify right side
   220,250x = 112,216,960,144
5. Step 5: Solve for x
   x = 112,216,960,144/220,250
6. Step 6: Final answer
   x = 509,498.12