Finding the Third Proportional to 122,111.25 and 260,352

Step by Step Solution

1. Step 1: Write the proportion equation
   122,111.25 : 260,352 = 260,352 : x
2. Step 2: Convert to fraction form
   122,111.25/260,352 = 260,352/x
3. Step 3: Cross multiply
   122,111.25x = 260,352 × 260,352
4. Step 4: Simplify right side
   122,111.25x = 67,783,163,904
5. Step 5: Solve for x
   x = 67,783,163,904/122,111.25
6. Step 6: Final answer
   x = 555,093.52