Finding the Third Proportional to 12,210.75 and 31,255.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,210.75 : 31,255.88 = 31,255.88 : x
2. Step 2: Convert to fraction form
   12,210.75/31,255.88 = 31,255.88/x
3. Step 3: Cross multiply
   12,210.75x = 31,255.88 × 31,255.88
4. Step 4: Simplify right side
   12,210.75x = 976,929,722.02
5. Step 5: Solve for x
   x = 976,929,722.02/12,210.75
6. Step 6: Final answer
   x = 80,005.71