Finding the Third Proportional to 121,725 and 262,890

Step by Step Solution

1. Step 1: Write the proportion equation
   121,725 : 262,890 = 262,890 : x
2. Step 2: Convert to fraction form
   121,725/262,890 = 262,890/x
3. Step 3: Cross multiply
   121,725x = 262,890 × 262,890
4. Step 4: Simplify right side
   121,725x = 69,111,152,100
5. Step 5: Solve for x
   x = 69,111,152,100/121,725
6. Step 6: Final answer
   x = 567,764.65