Finding the Third Proportional to 734,272 and 1,143,289

Step by Step Solution

1. Step 1: Write the proportion equation
   734,272 : 1,143,289 = 1,143,289 : x
2. Step 2: Convert to fraction form
   734,272/1,143,289 = 1,143,289/x
3. Step 3: Cross multiply
   734,272x = 1,143,289 × 1,143,289
4. Step 4: Simplify right side
   734,272x = 1,307,109,737,521
5. Step 5: Solve for x
   x = 1,307,109,737,521/734,272
6. Step 6: Final answer
   x = 1,780,143.79