Finding the Third Proportional to 809,984 and 1,287,316

Step by Step Solution

1. Step 1: Write the proportion equation
   809,984 : 1,287,316 = 1,287,316 : x
2. Step 2: Convert to fraction form
   809,984/1,287,316 = 1,287,316/x
3. Step 3: Cross multiply
   809,984x = 1,287,316 × 1,287,316
4. Step 4: Simplify right side
   809,984x = 1,657,182,483,856
5. Step 5: Solve for x
   x = 1,657,182,483,856/809,984
6. Step 6: Final answer
   x = 2,045,944.71