Finding the Third Proportional to 122,697 and 259,540.88

Step by Step Solution

1. Step 1: Write the proportion equation
   122,697 : 259,540.88 = 259,540.88 : x
2. Step 2: Convert to fraction form
   122,697/259,540.88 = 259,540.88/x
3. Step 3: Cross multiply
   122,697x = 259,540.88 × 259,540.88
4. Step 4: Simplify right side
   122,697x = 67,361,465,795.77
5. Step 5: Solve for x
   x = 67,361,465,795.77/122,697
6. Step 6: Final answer
   x = 549,006.62