Finding the Third Proportional to 247,510 and 508,142

Step by Step Solution

1. Step 1: Write the proportion equation
   247,510 : 508,142 = 508,142 : x
2. Step 2: Convert to fraction form
   247,510/508,142 = 508,142/x
3. Step 3: Cross multiply
   247,510x = 508,142 × 508,142
4. Step 4: Simplify right side
   247,510x = 258,208,292,164
5. Step 5: Solve for x
   x = 258,208,292,164/247,510
6. Step 6: Final answer
   x = 1,043,223.68