Finding the Third Proportional to 13,959.21 and 30,427.21

Step by Step Solution

1. Step 1: Write the proportion equation
   13,959.21 : 30,427.21 = 30,427.21 : x
2. Step 2: Convert to fraction form
   13,959.21/30,427.21 = 30,427.21/x
3. Step 3: Cross multiply
   13,959.21x = 30,427.21 × 30,427.21
4. Step 4: Simplify right side
   13,959.21x = 925,814,927.72
5. Step 5: Solve for x
   x = 925,814,927.72/13,959.21
6. Step 6: Final answer
   x = 66,322.87