Finding the Third Proportional to 1,138,376 and 1,648,780

Step by Step Solution

1. Step 1: Write the proportion equation
   1,138,376 : 1,648,780 = 1,648,780 : x
2. Step 2: Convert to fraction form
   1,138,376/1,648,780 = 1,648,780/x
3. Step 3: Cross multiply
   1,138,376x = 1,648,780 × 1,648,780
4. Step 4: Simplify right side
   1,138,376x = 2,718,475,488,400
5. Step 5: Solve for x
   x = 2,718,475,488,400/1,138,376
6. Step 6: Final answer
   x = 2,388,029.52