Finding the Third Proportional to 122,725 and 253,280

Step by Step Solution

1. Step 1: Write the proportion equation
   122,725 : 253,280 = 253,280 : x
2. Step 2: Convert to fraction form
   122,725/253,280 = 253,280/x
3. Step 3: Cross multiply
   122,725x = 253,280 × 253,280
4. Step 4: Simplify right side
   122,725x = 64,150,758,400
5. Step 5: Solve for x
   x = 64,150,758,400/122,725
6. Step 6: Final answer
   x = 522,719.56