Finding the Third Proportional to 245,086 and 538,500

Step by Step Solution

1. Step 1: Write the proportion equation
   245,086 : 538,500 = 538,500 : x
2. Step 2: Convert to fraction form
   245,086/538,500 = 538,500/x
3. Step 3: Cross multiply
   245,086x = 538,500 × 538,500
4. Step 4: Simplify right side
   245,086x = 289,982,250,000
5. Step 5: Solve for x
   x = 289,982,250,000/245,086
6. Step 6: Final answer
   x = 1,183,185.70