Finding the Third Proportional to 359,290 and 598,840

Step by Step Solution

1. Step 1: Write the proportion equation
   359,290 : 598,840 = 598,840 : x
2. Step 2: Convert to fraction form
   359,290/598,840 = 598,840/x
3. Step 3: Cross multiply
   359,290x = 598,840 × 598,840
4. Step 4: Simplify right side
   359,290x = 358,609,345,600
5. Step 5: Solve for x
   x = 358,609,345,600/359,290
6. Step 6: Final answer
   x = 998,105.56