Finding the Third Proportional to 115,280 and 250,760

Step by Step Solution

1. Step 1: Write the proportion equation
   115,280 : 250,760 = 250,760 : x
2. Step 2: Convert to fraction form
   115,280/250,760 = 250,760/x
3. Step 3: Cross multiply
   115,280x = 250,760 × 250,760
4. Step 4: Simplify right side
   115,280x = 62,880,577,600
5. Step 5: Solve for x
   x = 62,880,577,600/115,280
6. Step 6: Final answer
   x = 545,459.56