Finding the Third Proportional to 397,068 and 849,540

Step by Step Solution

1. Step 1: Write the proportion equation
   397,068 : 849,540 = 849,540 : x
2. Step 2: Convert to fraction form
   397,068/849,540 = 849,540/x
3. Step 3: Cross multiply
   397,068x = 849,540 × 849,540
4. Step 4: Simplify right side
   397,068x = 721,718,211,600
5. Step 5: Solve for x
   x = 721,718,211,600/397,068
6. Step 6: Final answer
   x = 1,817,618.67