Finding the Third Proportional to 148,626 and 320,940

Step by Step Solution

1. Step 1: Write the proportion equation
   148,626 : 320,940 = 320,940 : x
2. Step 2: Convert to fraction form
   148,626/320,940 = 320,940/x
3. Step 3: Cross multiply
   148,626x = 320,940 × 320,940
4. Step 4: Simplify right side
   148,626x = 103,002,483,600
5. Step 5: Solve for x
   x = 103,002,483,600/148,626
6. Step 6: Final answer
   x = 693,031.39