Finding the Third Proportional to 173,186 and 359,978

Step by Step Solution

1. Step 1: Write the proportion equation
   173,186 : 359,978 = 359,978 : x
2. Step 2: Convert to fraction form
   173,186/359,978 = 359,978/x
3. Step 3: Cross multiply
   173,186x = 359,978 × 359,978
4. Step 4: Simplify right side
   173,186x = 129,584,160,484
5. Step 5: Solve for x
   x = 129,584,160,484/173,186
6. Step 6: Final answer
   x = 748,236.93