Finding the Third Proportional to 118,429 and 253,747

Step by Step Solution

1. Step 1: Write the proportion equation
   118,429 : 253,747 = 253,747 : x
2. Step 2: Convert to fraction form
   118,429/253,747 = 253,747/x
3. Step 3: Cross multiply
   118,429x = 253,747 × 253,747
4. Step 4: Simplify right side
   118,429x = 64,387,540,009
5. Step 5: Solve for x
   x = 64,387,540,009/118,429
6. Step 6: Final answer
   x = 543,680.52