Finding the Third Proportional to 755,290 and 1,643,389

Step by Step Solution

1. Step 1: Write the proportion equation
   755,290 : 1,643,389 = 1,643,389 : x
2. Step 2: Convert to fraction form
   755,290/1,643,389 = 1,643,389/x
3. Step 3: Cross multiply
   755,290x = 1,643,389 × 1,643,389
4. Step 4: Simplify right side
   755,290x = 2,700,727,405,321
5. Step 5: Solve for x
   x = 2,700,727,405,321/755,290
6. Step 6: Final answer
   x = 3,575,748.92