Finding the Third Proportional to 298,402 and 610,590

Step by Step Solution

1. Step 1: Write the proportion equation
   298,402 : 610,590 = 610,590 : x
2. Step 2: Convert to fraction form
   298,402/610,590 = 610,590/x
3. Step 3: Cross multiply
   298,402x = 610,590 × 610,590
4. Step 4: Simplify right side
   298,402x = 372,820,148,100
5. Step 5: Solve for x
   x = 372,820,148,100/298,402
6. Step 6: Final answer
   x = 1,249,388.91