Finding the Third Proportional to 1,398,206 and 2,979,436

Step by Step Solution

1. Step 1: Write the proportion equation
   1,398,206 : 2,979,436 = 2,979,436 : x
2. Step 2: Convert to fraction form
   1,398,206/2,979,436 = 2,979,436/x
3. Step 3: Cross multiply
   1,398,206x = 2,979,436 × 2,979,436
4. Step 4: Simplify right side
   1,398,206x = 8,877,038,878,096
5. Step 5: Solve for x
   x = 8,877,038,878,096/1,398,206
6. Step 6: Final answer
   x = 6,348,877.69