Finding the Third Proportional to 147,386 and 315,801

Step by Step Solution

1. Step 1: Write the proportion equation
   147,386 : 315,801 = 315,801 : x
2. Step 2: Convert to fraction form
   147,386/315,801 = 315,801/x
3. Step 3: Cross multiply
   147,386x = 315,801 × 315,801
4. Step 4: Simplify right side
   147,386x = 99,730,271,601
5. Step 5: Solve for x
   x = 99,730,271,601/147,386
6. Step 6: Final answer
   x = 676,660.41