Finding the Third Proportional to 554,769 and 604,705.50

Step by Step Solution

1. Step 1: Write the proportion equation
   554,769 : 604,705.50 = 604,705.50 : x
2. Step 2: Convert to fraction form
   554,769/604,705.50 = 604,705.50/x
3. Step 3: Cross multiply
   554,769x = 604,705.50 × 604,705.50
4. Step 4: Simplify right side
   554,769x = 365,668,741,730.25
5. Step 5: Solve for x
   x = 365,668,741,730.25/554,769
6. Step 6: Final answer
   x = 659,136.94