Finding the Third Proportional to 1,578,534 and 3,409,320

Step by Step Solution

1. Step 1: Write the proportion equation
   1,578,534 : 3,409,320 = 3,409,320 : x
2. Step 2: Convert to fraction form
   1,578,534/3,409,320 = 3,409,320/x
3. Step 3: Cross multiply
   1,578,534x = 3,409,320 × 3,409,320
4. Step 4: Simplify right side
   1,578,534x = 11,623,462,862,400
5. Step 5: Solve for x
   x = 11,623,462,862,400/1,578,534
6. Step 6: Final answer
   x = 7,363,454.23