Finding the Third Proportional to 123,242 and 265,708

Step by Step Solution

1. Step 1: Write the proportion equation
   123,242 : 265,708 = 265,708 : x
2. Step 2: Convert to fraction form
   123,242/265,708 = 265,708/x
3. Step 3: Cross multiply
   123,242x = 265,708 × 265,708
4. Step 4: Simplify right side
   123,242x = 70,600,741,264
5. Step 5: Solve for x
   x = 70,600,741,264/123,242
6. Step 6: Final answer
   x = 572,862.67