Finding the Third Proportional to 123,280 and 265,837

Step by Step Solution

1. Step 1: Write the proportion equation
   123,280 : 265,837 = 265,837 : x
2. Step 2: Convert to fraction form
   123,280/265,837 = 265,837/x
3. Step 3: Cross multiply
   123,280x = 265,837 × 265,837
4. Step 4: Simplify right side
   123,280x = 70,669,310,569
5. Step 5: Solve for x
   x = 70,669,310,569/123,280
6. Step 6: Final answer
   x = 573,242.30