Finding the Third Proportional to 39,910 and 58,109

Step by Step Solution

1. Step 1: Write the proportion equation
   39,910 : 58,109 = 58,109 : x
2. Step 2: Convert to fraction form
   39,910/58,109 = 58,109/x
3. Step 3: Cross multiply
   39,910x = 58,109 × 58,109
4. Step 4: Simplify right side
   39,910x = 3,376,655,881
5. Step 5: Solve for x
   x = 3,376,655,881/39,910
6. Step 6: Final answer
   x = 84,606.76