Finding the Third Proportional to 20,584.13 and 42,064.31

Step by Step Solution

1. Step 1: Write the proportion equation
   20,584.13 : 42,064.31 = 42,064.31 : x
2. Step 2: Convert to fraction form
   20,584.13/42,064.31 = 42,064.31/x
3. Step 3: Cross multiply
   20,584.13x = 42,064.31 × 42,064.31
4. Step 4: Simplify right side
   20,584.13x = 1,769,406,386.10
5. Step 5: Solve for x
   x = 1,769,406,386.10/20,584.13
6. Step 6: Final answer
   x = 85,959.76