Finding the Third Proportional to 98,980 and 213,500

Step by Step Solution

1. Step 1: Write the proportion equation
   98,980 : 213,500 = 213,500 : x
2. Step 2: Convert to fraction form
   98,980/213,500 = 213,500/x
3. Step 3: Cross multiply
   98,980x = 213,500 × 213,500
4. Step 4: Simplify right side
   98,980x = 45,582,250,000
5. Step 5: Solve for x
   x = 45,582,250,000/98,980
6. Step 6: Final answer
   x = 460,519.80