Finding the Third Proportional to 646,316 and 1,382,488

Step by Step Solution

1. Step 1: Write the proportion equation
   646,316 : 1,382,488 = 1,382,488 : x
2. Step 2: Convert to fraction form
   646,316/1,382,488 = 1,382,488/x
3. Step 3: Cross multiply
   646,316x = 1,382,488 × 1,382,488
4. Step 4: Simplify right side
   646,316x = 1,911,273,070,144
5. Step 5: Solve for x
   x = 1,911,273,070,144/646,316
6. Step 6: Final answer
   x = 2,957,180.50