Finding the Third Proportional to 1,139,396 and 2,490,521

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,396 : 2,490,521 = 2,490,521 : x
2. Step 2: Convert to fraction form
   1,139,396/2,490,521 = 2,490,521/x
3. Step 3: Cross multiply
   1,139,396x = 2,490,521 × 2,490,521
4. Step 4: Simplify right side
   1,139,396x = 6,202,694,851,441
5. Step 5: Solve for x
   x = 6,202,694,851,441/1,139,396
6. Step 6: Final answer
   x = 5,443,844.68