Finding the Third Proportional to 185,428.50 and 380,687

Step by Step Solution

1. Step 1: Write the proportion equation
   185,428.50 : 380,687 = 380,687 : x
2. Step 2: Convert to fraction form
   185,428.50/380,687 = 380,687/x
3. Step 3: Cross multiply
   185,428.50x = 380,687 × 380,687
4. Step 4: Simplify right side
   185,428.50x = 144,922,591,969
5. Step 5: Solve for x
   x = 144,922,591,969/185,428.50
6. Step 6: Final answer
   x = 781,555.11