Finding the Third Proportional to 1,228,943 and 2,516,921

Step by Step Solution

1. Step 1: Write the proportion equation
   1,228,943 : 2,516,921 = 2,516,921 : x
2. Step 2: Convert to fraction form
   1,228,943/2,516,921 = 2,516,921/x
3. Step 3: Cross multiply
   1,228,943x = 2,516,921 × 2,516,921
4. Step 4: Simplify right side
   1,228,943x = 6,334,891,320,241
5. Step 5: Solve for x
   x = 6,334,891,320,241/1,228,943
6. Step 6: Final answer
   x = 5,154,747.88