Finding the Third Proportional to 20,548.69 and 53,422.03

Step by Step Solution

1. Step 1: Write the proportion equation
   20,548.69 : 53,422.03 = 53,422.03 : x
2. Step 2: Convert to fraction form
   20,548.69/53,422.03 = 53,422.03/x
3. Step 3: Cross multiply
   20,548.69x = 53,422.03 × 53,422.03
4. Step 4: Simplify right side
   20,548.69x = 2,853,913,422.88
5. Step 5: Solve for x
   x = 2,853,913,422.88/20,548.69
6. Step 6: Final answer
   x = 138,885.44