Finding the Third Proportional to 402,689 and 604,002

Step by Step Solution

1. Step 1: Write the proportion equation
   402,689 : 604,002 = 604,002 : x
2. Step 2: Convert to fraction form
   402,689/604,002 = 604,002/x
3. Step 3: Cross multiply
   402,689x = 604,002 × 604,002
4. Step 4: Simplify right side
   402,689x = 364,818,416,004
5. Step 5: Solve for x
   x = 364,818,416,004/402,689
6. Step 6: Final answer
   x = 905,955.75