Finding the Third Proportional to 415,924.50 and 621,114

Step by Step Solution

1. Step 1: Write the proportion equation
   415,924.50 : 621,114 = 621,114 : x
2. Step 2: Convert to fraction form
   415,924.50/621,114 = 621,114/x
3. Step 3: Cross multiply
   415,924.50x = 621,114 × 621,114
4. Step 4: Simplify right side
   415,924.50x = 385,782,600,996
5. Step 5: Solve for x
   x = 385,782,600,996/415,924.50
6. Step 6: Final answer
   x = 927,530.36