Finding the Third Proportional to 1,287,486 and 2,771,316

Step by Step Solution

1. Step 1: Write the proportion equation
   1,287,486 : 2,771,316 = 2,771,316 : x
2. Step 2: Convert to fraction form
   1,287,486/2,771,316 = 2,771,316/x
3. Step 3: Cross multiply
   1,287,486x = 2,771,316 × 2,771,316
4. Step 4: Simplify right side
   1,287,486x = 7,680,192,371,856
5. Step 5: Solve for x
   x = 7,680,192,371,856/1,287,486
6. Step 6: Final answer
   x = 5,965,262.82