Finding the Third Proportional to 140,460 and 300,603

Step by Step Solution

1. Step 1: Write the proportion equation
   140,460 : 300,603 = 300,603 : x
2. Step 2: Convert to fraction form
   140,460/300,603 = 300,603/x
3. Step 3: Cross multiply
   140,460x = 300,603 × 300,603
4. Step 4: Simplify right side
   140,460x = 90,362,163,609
5. Step 5: Solve for x
   x = 90,362,163,609/140,460
6. Step 6: Final answer
   x = 643,330.23