Finding the Third Proportional to 13,451.50 and 31,258.75

Step by Step Solution

1. Step 1: Write the proportion equation
   13,451.50 : 31,258.75 = 31,258.75 : x
2. Step 2: Convert to fraction form
   13,451.50/31,258.75 = 31,258.75/x
3. Step 3: Cross multiply
   13,451.50x = 31,258.75 × 31,258.75
4. Step 4: Simplify right side
   13,451.50x = 977,109,451.56
5. Step 5: Solve for x
   x = 977,109,451.56/13,451.50
6. Step 6: Final answer
   x = 72,639.44