Finding the Third Proportional to 173,842 and 418,658

Step by Step Solution

1. Step 1: Write the proportion equation
   173,842 : 418,658 = 418,658 : x
2. Step 2: Convert to fraction form
   173,842/418,658 = 418,658/x
3. Step 3: Cross multiply
   173,842x = 418,658 × 418,658
4. Step 4: Simplify right side
   173,842x = 175,274,520,964
5. Step 5: Solve for x
   x = 175,274,520,964/173,842
6. Step 6: Final answer
   x = 1,008,240.36