Finding the Third Proportional to 407,152 and 868,404

Step by Step Solution

1. Step 1: Write the proportion equation
   407,152 : 868,404 = 868,404 : x
2. Step 2: Convert to fraction form
   407,152/868,404 = 868,404/x
3. Step 3: Cross multiply
   407,152x = 868,404 × 868,404
4. Step 4: Simplify right side
   407,152x = 754,125,507,216
5. Step 5: Solve for x
   x = 754,125,507,216/407,152
6. Step 6: Final answer
   x = 1,852,196.49