Finding the Third Proportional to 390,964.50 and 604,404

Step by Step Solution

1. Step 1: Write the proportion equation
   390,964.50 : 604,404 = 604,404 : x
2. Step 2: Convert to fraction form
   390,964.50/604,404 = 604,404/x
3. Step 3: Cross multiply
   390,964.50x = 604,404 × 604,404
4. Step 4: Simplify right side
   390,964.50x = 365,304,195,216
5. Step 5: Solve for x
   x = 365,304,195,216/390,964.50
6. Step 6: Final answer
   x = 934,366.66