Finding the Third Proportional to 646,308 and 1,382,472

Step by Step Solution

1. Step 1: Write the proportion equation
   646,308 : 1,382,472 = 1,382,472 : x
2. Step 2: Convert to fraction form
   646,308/1,382,472 = 1,382,472/x
3. Step 3: Cross multiply
   646,308x = 1,382,472 × 1,382,472
4. Step 4: Simplify right side
   646,308x = 1,911,228,830,784
5. Step 5: Solve for x
   x = 1,911,228,830,784/646,308
6. Step 6: Final answer
   x = 2,957,148.65