Finding the Third Proportional to 26,720.25 and 42,308.63

Step by Step Solution

1. Step 1: Write the proportion equation
   26,720.25 : 42,308.63 = 42,308.63 : x
2. Step 2: Convert to fraction form
   26,720.25/42,308.63 = 42,308.63/x
3. Step 3: Cross multiply
   26,720.25x = 42,308.63 × 42,308.63
4. Step 4: Simplify right side
   26,720.25x = 1,790,019,749.39
5. Step 5: Solve for x
   x = 1,790,019,749.39/26,720.25
6. Step 6: Final answer
   x = 66,991.13