Finding the Third Proportional to 402,378 and 870,093

Step by Step Solution

1. Step 1: Write the proportion equation
   402,378 : 870,093 = 870,093 : x
2. Step 2: Convert to fraction form
   402,378/870,093 = 870,093/x
3. Step 3: Cross multiply
   402,378x = 870,093 × 870,093
4. Step 4: Simplify right side
   402,378x = 757,061,828,649
5. Step 5: Solve for x
   x = 757,061,828,649/402,378
6. Step 6: Final answer
   x = 1,881,469.24