Finding the Third Proportional to 858,688 and 1,887,360

Step by Step Solution

1. Step 1: Write the proportion equation
   858,688 : 1,887,360 = 1,887,360 : x
2. Step 2: Convert to fraction form
   858,688/1,887,360 = 1,887,360/x
3. Step 3: Cross multiply
   858,688x = 1,887,360 × 1,887,360
4. Step 4: Simplify right side
   858,688x = 3,562,127,769,600
5. Step 5: Solve for x
   x = 3,562,127,769,600/858,688
6. Step 6: Final answer
   x = 4,148,337.66