Finding the Third Proportional to 26,215.88 and 56,139.19

Step by Step Solution

1. Step 1: Write the proportion equation
   26,215.88 : 56,139.19 = 56,139.19 : x
2. Step 2: Convert to fraction form
   26,215.88/56,139.19 = 56,139.19/x
3. Step 3: Cross multiply
   26,215.88x = 56,139.19 × 56,139.19
4. Step 4: Simplify right side
   26,215.88x = 3,151,608,373.16
5. Step 5: Solve for x
   x = 3,151,608,373.16/26,215.88
6. Step 6: Final answer
   x = 120,217.55