Finding the Third Proportional to 1,675,421 and 3,658,090

Step by Step Solution

1. Step 1: Write the proportion equation
   1,675,421 : 3,658,090 = 3,658,090 : x
2. Step 2: Convert to fraction form
   1,675,421/3,658,090 = 3,658,090/x
3. Step 3: Cross multiply
   1,675,421x = 3,658,090 × 3,658,090
4. Step 4: Simplify right side
   1,675,421x = 13,381,622,448,100
5. Step 5: Solve for x
   x = 13,381,622,448,100/1,675,421
6. Step 6: Final answer
   x = 7,987,020.84