Finding the Third Proportional to 31,225.50 and 73,372.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,225.50 : 73,372.50 = 73,372.50 : x
2. Step 2: Convert to fraction form
   31,225.50/73,372.50 = 73,372.50/x
3. Step 3: Cross multiply
   31,225.50x = 73,372.50 × 73,372.50
4. Step 4: Simplify right side
   31,225.50x = 5,383,523,756.25
5. Step 5: Solve for x
   x = 5,383,523,756.25/31,225.50
6. Step 6: Final answer
   x = 172,407.93