Finding the Third Proportional to 1,659,390 and 3,640,188

Step by Step Solution

1. Step 1: Write the proportion equation
   1,659,390 : 3,640,188 = 3,640,188 : x
2. Step 2: Convert to fraction form
   1,659,390/3,640,188 = 3,640,188/x
3. Step 3: Cross multiply
   1,659,390x = 3,640,188 × 3,640,188
4. Step 4: Simplify right side
   1,659,390x = 13,250,968,675,344
5. Step 5: Solve for x
   x = 13,250,968,675,344/1,659,390
6. Step 6: Final answer
   x = 7,985,445.66