Finding the Third Proportional to 113,980 and 247,280

Step by Step Solution

1. Step 1: Write the proportion equation
   113,980 : 247,280 = 247,280 : x
2. Step 2: Convert to fraction form
   113,980/247,280 = 247,280/x
3. Step 3: Cross multiply
   113,980x = 247,280 × 247,280
4. Step 4: Simplify right side
   113,980x = 61,147,398,400
5. Step 5: Solve for x
   x = 61,147,398,400/113,980
6. Step 6: Final answer
   x = 536,474.81