Finding the Third Proportional to 358,969.50 and 777,375

Step by Step Solution

1. Step 1: Write the proportion equation
   358,969.50 : 777,375 = 777,375 : x
2. Step 2: Convert to fraction form
   358,969.50/777,375 = 777,375/x
3. Step 3: Cross multiply
   358,969.50x = 777,375 × 777,375
4. Step 4: Simplify right side
   358,969.50x = 604,311,890,625
5. Step 5: Solve for x
   x = 604,311,890,625/358,969.50
6. Step 6: Final answer
   x = 1,683,463.05