Finding the Third Proportional to 166,623 and 357,870

Step by Step Solution

1. Step 1: Write the proportion equation
   166,623 : 357,870 = 357,870 : x
2. Step 2: Convert to fraction form
   166,623/357,870 = 357,870/x
3. Step 3: Cross multiply
   166,623x = 357,870 × 357,870
4. Step 4: Simplify right side
   166,623x = 128,070,936,900
5. Step 5: Solve for x
   x = 128,070,936,900/166,623
6. Step 6: Final answer
   x = 768,627.00