Finding the Third Proportional to 1,139,394 and 2,490,517

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,394 : 2,490,517 = 2,490,517 : x
2. Step 2: Convert to fraction form
   1,139,394/2,490,517 = 2,490,517/x
3. Step 3: Cross multiply
   1,139,394x = 2,490,517 × 2,490,517
4. Step 4: Simplify right side
   1,139,394x = 6,202,674,927,289
5. Step 5: Solve for x
   x = 6,202,674,927,289/1,139,394
6. Step 6: Final answer
   x = 5,443,836.75