Finding the Third Proportional to 1,447,640 and 3,180,805

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447,640 : 3,180,805 = 3,180,805 : x
2. Step 2: Convert to fraction form
   1,447,640/3,180,805 = 3,180,805/x
3. Step 3: Cross multiply
   1,447,640x = 3,180,805 × 3,180,805
4. Step 4: Simplify right side
   1,447,640x = 10,117,520,448,025
5. Step 5: Solve for x
   x = 10,117,520,448,025/1,447,640
6. Step 6: Final answer
   x = 6,988,975.47