Finding the Third Proportional to 147,762 and 315,180

Step by Step Solution

1. Step 1: Write the proportion equation
   147,762 : 315,180 = 315,180 : x
2. Step 2: Convert to fraction form
   147,762/315,180 = 315,180/x
3. Step 3: Cross multiply
   147,762x = 315,180 × 315,180
4. Step 4: Simplify right side
   147,762x = 99,338,432,400
5. Step 5: Solve for x
   x = 99,338,432,400/147,762
6. Step 6: Final answer
   x = 672,286.73