Finding the Third Proportional to 161,870 and 355,858

Step by Step Solution

1. Step 1: Write the proportion equation
   161,870 : 355,858 = 355,858 : x
2. Step 2: Convert to fraction form
   161,870/355,858 = 355,858/x
3. Step 3: Cross multiply
   161,870x = 355,858 × 355,858
4. Step 4: Simplify right side
   161,870x = 126,634,916,164
5. Step 5: Solve for x
   x = 126,634,916,164/161,870
6. Step 6: Final answer
   x = 782,324.80