Finding the Third Proportional to 349,870 and 763,049

Step by Step Solution

1. Step 1: Write the proportion equation
   349,870 : 763,049 = 763,049 : x
2. Step 2: Convert to fraction form
   349,870/763,049 = 763,049/x
3. Step 3: Cross multiply
   349,870x = 763,049 × 763,049
4. Step 4: Simplify right side
   349,870x = 582,243,776,401
5. Step 5: Solve for x
   x = 582,243,776,401/349,870
6. Step 6: Final answer
   x = 1,664,171.77