Finding the Third Proportional to 166,860 and 345,549

Step by Step Solution

1. Step 1: Write the proportion equation
   166,860 : 345,549 = 345,549 : x
2. Step 2: Convert to fraction form
   166,860/345,549 = 345,549/x
3. Step 3: Cross multiply
   166,860x = 345,549 × 345,549
4. Step 4: Simplify right side
   166,860x = 119,404,111,401
5. Step 5: Solve for x
   x = 119,404,111,401/166,860
6. Step 6: Final answer
   x = 715,594.58