Finding the Third Proportional to 334,112 and 518,140

Step by Step Solution

1. Step 1: Write the proportion equation
   334,112 : 518,140 = 518,140 : x
2. Step 2: Convert to fraction form
   334,112/518,140 = 518,140/x
3. Step 3: Cross multiply
   334,112x = 518,140 × 518,140
4. Step 4: Simplify right side
   334,112x = 268,469,059,600
5. Step 5: Solve for x
   x = 268,469,059,600/334,112
6. Step 6: Final answer
   x = 803,530.13