Finding the Third Proportional to 647,830 and 1,337,156

Step by Step Solution

1. Step 1: Write the proportion equation
   647,830 : 1,337,156 = 1,337,156 : x
2. Step 2: Convert to fraction form
   647,830/1,337,156 = 1,337,156/x
3. Step 3: Cross multiply
   647,830x = 1,337,156 × 1,337,156
4. Step 4: Simplify right side
   647,830x = 1,787,986,168,336
5. Step 5: Solve for x
   x = 1,787,986,168,336/647,830
6. Step 6: Final answer
   x = 2,759,961.98