Finding the Third Proportional to 122,272 and 264,890

Step by Step Solution

1. Step 1: Write the proportion equation
   122,272 : 264,890 = 264,890 : x
2. Step 2: Convert to fraction form
   122,272/264,890 = 264,890/x
3. Step 3: Cross multiply
   122,272x = 264,890 × 264,890
4. Step 4: Simplify right side
   122,272x = 70,166,712,100
5. Step 5: Solve for x
   x = 70,166,712,100/122,272
6. Step 6: Final answer
   x = 573,857.56