Finding the Third Proportional to 413,380.50 and 620,070

Step by Step Solution

1. Step 1: Write the proportion equation
   413,380.50 : 620,070 = 620,070 : x
2. Step 2: Convert to fraction form
   413,380.50/620,070 = 620,070/x
3. Step 3: Cross multiply
   413,380.50x = 620,070 × 620,070
4. Step 4: Simplify right side
   413,380.50x = 384,486,804,900
5. Step 5: Solve for x
   x = 384,486,804,900/413,380.50
6. Step 6: Final answer
   x = 930,103.88