Finding the Third Proportional to 1,115,376 and 1,683,456

Step by Step Solution

1. Step 1: Write the proportion equation
   1,115,376 : 1,683,456 = 1,683,456 : x
2. Step 2: Convert to fraction form
   1,115,376/1,683,456 = 1,683,456/x
3. Step 3: Cross multiply
   1,115,376x = 1,683,456 × 1,683,456
4. Step 4: Simplify right side
   1,115,376x = 2,834,024,103,936
5. Step 5: Solve for x
   x = 2,834,024,103,936/1,115,376
6. Step 6: Final answer
   x = 2,540,868.82