Finding the Third Proportional to 403,810 and 849,470

Step by Step Solution

1. Step 1: Write the proportion equation
   403,810 : 849,470 = 849,470 : x
2. Step 2: Convert to fraction form
   403,810/849,470 = 849,470/x
3. Step 3: Cross multiply
   403,810x = 849,470 × 849,470
4. Step 4: Simplify right side
   403,810x = 721,599,280,900
5. Step 5: Solve for x
   x = 721,599,280,900/403,810
6. Step 6: Final answer
   x = 1,786,977.24