Finding the Third Proportional to 173,222 and 391,250

Step by Step Solution

1. Step 1: Write the proportion equation
   173,222 : 391,250 = 391,250 : x
2. Step 2: Convert to fraction form
   173,222/391,250 = 391,250/x
3. Step 3: Cross multiply
   173,222x = 391,250 × 391,250
4. Step 4: Simplify right side
   173,222x = 153,076,562,500
5. Step 5: Solve for x
   x = 153,076,562,500/173,222
6. Step 6: Final answer
   x = 883,701.62