Finding the Third Proportional to 1,086,290 and 1,643,412

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086,290 : 1,643,412 = 1,643,412 : x
2. Step 2: Convert to fraction form
   1,086,290/1,643,412 = 1,643,412/x
3. Step 3: Cross multiply
   1,086,290x = 1,643,412 × 1,643,412
4. Step 4: Simplify right side
   1,086,290x = 2,700,803,001,744
5. Step 5: Solve for x
   x = 2,700,803,001,744/1,086,290
6. Step 6: Final answer
   x = 2,486,263.34