Finding the Third Proportional to 423,524.25 and 621,162

Step by Step Solution

1. Step 1: Write the proportion equation
   423,524.25 : 621,162 = 621,162 : x
2. Step 2: Convert to fraction form
   423,524.25/621,162 = 621,162/x
3. Step 3: Cross multiply
   423,524.25x = 621,162 × 621,162
4. Step 4: Simplify right side
   423,524.25x = 385,842,230,244
5. Step 5: Solve for x
   x = 385,842,230,244/423,524.25
6. Step 6: Final answer
   x = 911,027.48