Finding the Third Proportional to 13,186.50 and 31,128

Step by Step Solution

1. Step 1: Write the proportion equation
   13,186.50 : 31,128 = 31,128 : x
2. Step 2: Convert to fraction form
   13,186.50/31,128 = 31,128/x
3. Step 3: Cross multiply
   13,186.50x = 31,128 × 31,128
4. Step 4: Simplify right side
   13,186.50x = 968,952,384
5. Step 5: Solve for x
   x = 968,952,384/13,186.50
6. Step 6: Final answer
   x = 73,480.63