Finding the Third Proportional to 400,164 and 610,404

Step by Step Solution

1. Step 1: Write the proportion equation
   400,164 : 610,404 = 610,404 : x
2. Step 2: Convert to fraction form
   400,164/610,404 = 610,404/x
3. Step 3: Cross multiply
   400,164x = 610,404 × 610,404
4. Step 4: Simplify right side
   400,164x = 372,593,043,216
5. Step 5: Solve for x
   x = 372,593,043,216/400,164
6. Step 6: Final answer
   x = 931,100.86