Finding the Third Proportional to 1,287,490 and 2,771,324

Step by Step Solution

1. Step 1: Write the proportion equation
   1,287,490 : 2,771,324 = 2,771,324 : x
2. Step 2: Convert to fraction form
   1,287,490/2,771,324 = 2,771,324/x
3. Step 3: Cross multiply
   1,287,490x = 2,771,324 × 2,771,324
4. Step 4: Simplify right side
   1,287,490x = 7,680,236,712,976
5. Step 5: Solve for x
   x = 7,680,236,712,976/1,287,490
6. Step 6: Final answer
   x = 5,965,278.73