Finding the Third Proportional to 127,396 and 272,648

Step by Step Solution

1. Step 1: Write the proportion equation
   127,396 : 272,648 = 272,648 : x
2. Step 2: Convert to fraction form
   127,396/272,648 = 272,648/x
3. Step 3: Cross multiply
   127,396x = 272,648 × 272,648
4. Step 4: Simplify right side
   127,396x = 74,336,931,904
5. Step 5: Solve for x
   x = 74,336,931,904/127,396
6. Step 6: Final answer
   x = 583,510.72