Finding the Third Proportional to 343,405.50 and 745,906

Step by Step Solution

1. Step 1: Write the proportion equation
   343,405.50 : 745,906 = 745,906 : x
2. Step 2: Convert to fraction form
   343,405.50/745,906 = 745,906/x
3. Step 3: Cross multiply
   343,405.50x = 745,906 × 745,906
4. Step 4: Simplify right side
   343,405.50x = 556,375,760,836
5. Step 5: Solve for x
   x = 556,375,760,836/343,405.50
6. Step 6: Final answer
   x = 1,620,171.37