Finding the Third Proportional to 245,397 and 360,003

Step by Step Solution

1. Step 1: Write the proportion equation
   245,397 : 360,003 = 360,003 : x
2. Step 2: Convert to fraction form
   245,397/360,003 = 360,003/x
3. Step 3: Cross multiply
   245,397x = 360,003 × 360,003
4. Step 4: Simplify right side
   245,397x = 129,602,160,009
5. Step 5: Solve for x
   x = 129,602,160,009/245,397
6. Step 6: Final answer
   x = 528,132.62