Finding the Third Proportional to 26,628 and 42,898

Step by Step Solution

1. Step 1: Write the proportion equation
   26,628 : 42,898 = 42,898 : x
2. Step 2: Convert to fraction form
   26,628/42,898 = 42,898/x
3. Step 3: Cross multiply
   26,628x = 42,898 × 42,898
4. Step 4: Simplify right side
   26,628x = 1,840,238,404
5. Step 5: Solve for x
   x = 1,840,238,404/26,628
6. Step 6: Final answer
   x = 69,109.15