Finding the Third Proportional to 371,499 and 573,990

Step by Step Solution

1. Step 1: Write the proportion equation
   371,499 : 573,990 = 573,990 : x
2. Step 2: Convert to fraction form
   371,499/573,990 = 573,990/x
3. Step 3: Cross multiply
   371,499x = 573,990 × 573,990
4. Step 4: Simplify right side
   371,499x = 329,464,520,100
5. Step 5: Solve for x
   x = 329,464,520,100/371,499
6. Step 6: Final answer
   x = 886,851.70