Finding the Third Proportional to 26,221.50 and 56,815.50

Step by Step Solution

1. Step 1: Write the proportion equation
   26,221.50 : 56,815.50 = 56,815.50 : x
2. Step 2: Convert to fraction form
   26,221.50/56,815.50 = 56,815.50/x
3. Step 3: Cross multiply
   26,221.50x = 56,815.50 × 56,815.50
4. Step 4: Simplify right side
   26,221.50x = 3,228,001,040.25
5. Step 5: Solve for x
   x = 3,228,001,040.25/26,221.50
6. Step 6: Final answer
   x = 123,105.13