Finding the Third Proportional to 789,688 and 1,249,355

Step by Step Solution

1. Step 1: Write the proportion equation
   789,688 : 1,249,355 = 1,249,355 : x
2. Step 2: Convert to fraction form
   789,688/1,249,355 = 1,249,355/x
3. Step 3: Cross multiply
   789,688x = 1,249,355 × 1,249,355
4. Step 4: Simplify right side
   789,688x = 1,560,887,916,025
5. Step 5: Solve for x
   x = 1,560,887,916,025/789,688
6. Step 6: Final answer
   x = 1,976,588.12