Finding the Third Proportional to 490,689 and 999,420.75

Step by Step Solution

1. Step 1: Write the proportion equation
   490,689 : 999,420.75 = 999,420.75 : x
2. Step 2: Convert to fraction form
   490,689/999,420.75 = 999,420.75/x
3. Step 3: Cross multiply
   490,689x = 999,420.75 × 999,420.75
4. Step 4: Simplify right side
   490,689x = 998,841,835,530.56
5. Step 5: Solve for x
   x = 998,841,835,530.56/490,689
6. Step 6: Final answer
   x = 2,035,590.44