Finding the Third Proportional to 370,404 and 570,990

Step by Step Solution

1. Step 1: Write the proportion equation
   370,404 : 570,990 = 570,990 : x
2. Step 2: Convert to fraction form
   370,404/570,990 = 570,990/x
3. Step 3: Cross multiply
   370,404x = 570,990 × 570,990
4. Step 4: Simplify right side
   370,404x = 326,029,580,100
5. Step 5: Solve for x
   x = 326,029,580,100/370,404
6. Step 6: Final answer
   x = 880,199.94