Finding the Third Proportional to 413,401.50 and 620,104.50

Step by Step Solution

1. Step 1: Write the proportion equation
   413,401.50 : 620,104.50 = 620,104.50 : x
2. Step 2: Convert to fraction form
   413,401.50/620,104.50 = 620,104.50/x
3. Step 3: Cross multiply
   413,401.50x = 620,104.50 × 620,104.50
4. Step 4: Simplify right side
   413,401.50x = 384,529,590,920.25
5. Step 5: Solve for x
   x = 384,529,590,920.25/413,401.50
6. Step 6: Final answer
   x = 930,160.13