Finding the Third Proportional to 1,946,688 and 3,986,688

Step by Step Solution

1. Step 1: Write the proportion equation
   1,946,688 : 3,986,688 = 3,986,688 : x
2. Step 2: Convert to fraction form
   1,946,688/3,986,688 = 3,986,688/x
3. Step 3: Cross multiply
   1,946,688x = 3,986,688 × 3,986,688
4. Step 4: Simplify right side
   1,946,688x = 15,893,681,209,344
5. Step 5: Solve for x
   x = 15,893,681,209,344/1,946,688
6. Step 6: Final answer
   x = 8,164,472.79