Finding the Third Proportional to 122,558 and 173,426

Step by Step Solution

1. Step 1: Write the proportion equation
   122,558 : 173,426 = 173,426 : x
2. Step 2: Convert to fraction form
   122,558/173,426 = 173,426/x
3. Step 3: Cross multiply
   122,558x = 173,426 × 173,426
4. Step 4: Simplify right side
   122,558x = 30,076,577,476
5. Step 5: Solve for x
   x = 30,076,577,476/122,558
6. Step 6: Final answer
   x = 245,406.89