Finding the Third Proportional to 396,708 and 604,354.50

Step by Step Solution

1. Step 1: Write the proportion equation
   396,708 : 604,354.50 = 604,354.50 : x
2. Step 2: Convert to fraction form
   396,708/604,354.50 = 604,354.50/x
3. Step 3: Cross multiply
   396,708x = 604,354.50 × 604,354.50
4. Step 4: Simplify right side
   396,708x = 365,244,361,670.25
5. Step 5: Solve for x
   x = 365,244,361,670.25/396,708
6. Step 6: Final answer
   x = 920,688.17