Finding the Third Proportional to 130,518 and 200,970

Step by Step Solution

1. Step 1: Write the proportion equation
   130,518 : 200,970 = 200,970 : x
2. Step 2: Convert to fraction form
   130,518/200,970 = 200,970/x
3. Step 3: Cross multiply
   130,518x = 200,970 × 200,970
4. Step 4: Simplify right side
   130,518x = 40,388,940,900
5. Step 5: Solve for x
   x = 40,388,940,900/130,518
6. Step 6: Final answer
   x = 309,451.12