Finding the Third Proportional to 300,510 and 634,554

Step by Step Solution

1. Step 1: Write the proportion equation
   300,510 : 634,554 = 634,554 : x
2. Step 2: Convert to fraction form
   300,510/634,554 = 634,554/x
3. Step 3: Cross multiply
   300,510x = 634,554 × 634,554
4. Step 4: Simplify right side
   300,510x = 402,658,778,916
5. Step 5: Solve for x
   x = 402,658,778,916/300,510
6. Step 6: Final answer
   x = 1,339,918.07