Finding the Third Proportional to 177,486.50 and 386,071

Step by Step Solution

1. Step 1: Write the proportion equation
   177,486.50 : 386,071 = 386,071 : x
2. Step 2: Convert to fraction form
   177,486.50/386,071 = 386,071/x
3. Step 3: Cross multiply
   177,486.50x = 386,071 × 386,071
4. Step 4: Simplify right side
   177,486.50x = 149,050,817,041
5. Step 5: Solve for x
   x = 149,050,817,041/177,486.50
6. Step 6: Final answer
   x = 839,786.78