Finding the Third Proportional to 425,415 and 658,636.50

Step by Step Solution

1. Step 1: Write the proportion equation
   425,415 : 658,636.50 = 658,636.50 : x
2. Step 2: Convert to fraction form
   425,415/658,636.50 = 658,636.50/x
3. Step 3: Cross multiply
   425,415x = 658,636.50 × 658,636.50
4. Step 4: Simplify right side
   425,415x = 433,802,039,132.25
5. Step 5: Solve for x
   x = 433,802,039,132.25/425,415
6. Step 6: Final answer
   x = 1,019,714.96