Finding the Third Proportional to 379,810 and 587,910

Step by Step Solution

1. Step 1: Write the proportion equation
   379,810 : 587,910 = 587,910 : x
2. Step 2: Convert to fraction form
   379,810/587,910 = 587,910/x
3. Step 3: Cross multiply
   379,810x = 587,910 × 587,910
4. Step 4: Simplify right side
   379,810x = 345,638,168,100
5. Step 5: Solve for x
   x = 345,638,168,100/379,810
6. Step 6: Final answer
   x = 910,029.14