Finding the Third Proportional to 454,086 and 648,141.75

Step by Step Solution

1. Step 1: Write the proportion equation
   454,086 : 648,141.75 = 648,141.75 : x
2. Step 2: Convert to fraction form
   454,086/648,141.75 = 648,141.75/x
3. Step 3: Cross multiply
   454,086x = 648,141.75 × 648,141.75
4. Step 4: Simplify right side
   454,086x = 420,087,728,093.06
5. Step 5: Solve for x
   x = 420,087,728,093.06/454,086
6. Step 6: Final answer
   x = 925,128.12