Finding the Third Proportional to 13,009.50 and 30,681

Step by Step Solution

1. Step 1: Write the proportion equation
   13,009.50 : 30,681 = 30,681 : x
2. Step 2: Convert to fraction form
   13,009.50/30,681 = 30,681/x
3. Step 3: Cross multiply
   13,009.50x = 30,681 × 30,681
4. Step 4: Simplify right side
   13,009.50x = 941,323,761
5. Step 5: Solve for x
   x = 941,323,761/13,009.50
6. Step 6: Final answer
   x = 72,356.64