Finding the Third Proportional to 1,492,390 and 3,197,688

Step by Step Solution

1. Step 1: Write the proportion equation
   1,492,390 : 3,197,688 = 3,197,688 : x
2. Step 2: Convert to fraction form
   1,492,390/3,197,688 = 3,197,688/x
3. Step 3: Cross multiply
   1,492,390x = 3,197,688 × 3,197,688
4. Step 4: Simplify right side
   1,492,390x = 10,225,208,545,344
5. Step 5: Solve for x
   x = 10,225,208,545,344/1,492,390
6. Step 6: Final answer
   x = 6,851,565.97