Finding the Third Proportional to 241,280 and 317,280

Step by Step Solution

1. Step 1: Write the proportion equation
   241,280 : 317,280 = 317,280 : x
2. Step 2: Convert to fraction form
   241,280/317,280 = 317,280/x
3. Step 3: Cross multiply
   241,280x = 317,280 × 317,280
4. Step 4: Simplify right side
   241,280x = 100,666,598,400
5. Step 5: Solve for x
   x = 100,666,598,400/241,280
6. Step 6: Final answer
   x = 417,218.99