Finding the Third Proportional to 1,247,378 and 1,737,912

Step by Step Solution

1. Step 1: Write the proportion equation
   1,247,378 : 1,737,912 = 1,737,912 : x
2. Step 2: Convert to fraction form
   1,247,378/1,737,912 = 1,737,912/x
3. Step 3: Cross multiply
   1,247,378x = 1,737,912 × 1,737,912
4. Step 4: Simplify right side
   1,247,378x = 3,020,338,119,744
5. Step 5: Solve for x
   x = 3,020,338,119,744/1,247,378
6. Step 6: Final answer
   x = 2,421,349.52