Finding the Third Proportional to 149,674.50 and 320,103

Step by Step Solution

1. Step 1: Write the proportion equation
   149,674.50 : 320,103 = 320,103 : x
2. Step 2: Convert to fraction form
   149,674.50/320,103 = 320,103/x
3. Step 3: Cross multiply
   149,674.50x = 320,103 × 320,103
4. Step 4: Simplify right side
   149,674.50x = 102,465,930,609
5. Step 5: Solve for x
   x = 102,465,930,609/149,674.50
6. Step 6: Final answer
   x = 684,591.77