Finding the Third Proportional to 647,156 and 979,790

Step by Step Solution

1. Step 1: Write the proportion equation
   647,156 : 979,790 = 979,790 : x
2. Step 2: Convert to fraction form
   647,156/979,790 = 979,790/x
3. Step 3: Cross multiply
   647,156x = 979,790 × 979,790
4. Step 4: Simplify right side
   647,156x = 959,988,444,100
5. Step 5: Solve for x
   x = 959,988,444,100/647,156
6. Step 6: Final answer
   x = 1,483,395.73