Finding the Third Proportional to 245,685 and 360,469.50

Step by Step Solution

1. Step 1: Write the proportion equation
   245,685 : 360,469.50 = 360,469.50 : x
2. Step 2: Convert to fraction form
   245,685/360,469.50 = 360,469.50/x
3. Step 3: Cross multiply
   245,685x = 360,469.50 × 360,469.50
4. Step 4: Simplify right side
   245,685x = 129,938,260,430.25
5. Step 5: Solve for x
   x = 129,938,260,430.25/245,685
6. Step 6: Final answer
   x = 528,881.54