Finding the Third Proportional to 13,520.25 and 31,370.63

Step by Step Solution

1. Step 1: Write the proportion equation
   13,520.25 : 31,370.63 = 31,370.63 : x
2. Step 2: Convert to fraction form
   13,520.25/31,370.63 = 31,370.63/x
3. Step 3: Cross multiply
   13,520.25x = 31,370.63 × 31,370.63
4. Step 4: Simplify right side
   13,520.25x = 984,116,112.89
5. Step 5: Solve for x
   x = 984,116,112.89/13,520.25
6. Step 6: Final answer
   x = 72,788.31