Finding the Third Proportional to 265,960.50 and 398,940

Step by Step Solution

1. Step 1: Write the proportion equation
   265,960.50 : 398,940 = 398,940 : x
2. Step 2: Convert to fraction form
   265,960.50/398,940 = 398,940/x
3. Step 3: Cross multiply
   265,960.50x = 398,940 × 398,940
4. Step 4: Simplify right side
   265,960.50x = 159,153,123,600
5. Step 5: Solve for x
   x = 159,153,123,600/265,960.50
6. Step 6: Final answer
   x = 598,408.88