Finding the Third Proportional to 26,618.72 and 58,638.38

Step by Step Solution

1. Step 1: Write the proportion equation
   26,618.72 : 58,638.38 = 58,638.38 : x
2. Step 2: Convert to fraction form
   26,618.72/58,638.38 = 58,638.38/x
3. Step 3: Cross multiply
   26,618.72x = 58,638.38 × 58,638.38
4. Step 4: Simplify right side
   26,618.72x = 3,438,459,022.64
5. Step 5: Solve for x
   x = 3,438,459,022.64/26,618.72
6. Step 6: Final answer
   x = 129,174.48