Finding the Third Proportional to 155,401.50 and 340,443

Step by Step Solution

1. Step 1: Write the proportion equation
   155,401.50 : 340,443 = 340,443 : x
2. Step 2: Convert to fraction form
   155,401.50/340,443 = 340,443/x
3. Step 3: Cross multiply
   155,401.50x = 340,443 × 340,443
4. Step 4: Simplify right side
   155,401.50x = 115,901,436,249
5. Step 5: Solve for x
   x = 115,901,436,249/155,401.50
6. Step 6: Final answer
   x = 745,819.29