Finding the Third Proportional to 683,721 and 1,061,316

Step by Step Solution

1. Step 1: Write the proportion equation
   683,721 : 1,061,316 = 1,061,316 : x
2. Step 2: Convert to fraction form
   683,721/1,061,316 = 1,061,316/x
3. Step 3: Cross multiply
   683,721x = 1,061,316 × 1,061,316
4. Step 4: Simplify right side
   683,721x = 1,126,391,651,856
5. Step 5: Solve for x
   x = 1,126,391,651,856/683,721
6. Step 6: Final answer
   x = 1,647,443.40