Finding the Third Proportional to 406,363,404 and 890,361,478.50

Step by Step Solution

1. Step 1: Write the proportion equation
   406,363,404 : 890,361,478.50 = 890,361,478.50 : x
2. Step 2: Convert to fraction form
   406,363,404/890,361,478.50 = 890,361,478.50/x
3. Step 3: Cross multiply
   406,363,404x = 890,361,478.50 × 890,361,478.50
4. Step 4: Simplify right side
   406,363,404x = 792,743,562,396,705,920
5. Step 5: Solve for x
   x = 792,743,562,396,705,920/406,363,404
6. Step 6: Final answer
   x = 1,950,824,199.70