Finding the Third Proportional to 164,860 and 337,550

Step by Step Solution

1. Step 1: Write the proportion equation
   164,860 : 337,550 = 337,550 : x
2. Step 2: Convert to fraction form
   164,860/337,550 = 337,550/x
3. Step 3: Cross multiply
   164,860x = 337,550 × 337,550
4. Step 4: Simplify right side
   164,860x = 113,940,002,500
5. Step 5: Solve for x
   x = 113,940,002,500/164,860
6. Step 6: Final answer
   x = 691,131.88