Finding the Third Proportional to 458,086.50 and 673,447.50

Step by Step Solution

1. Step 1: Write the proportion equation
   458,086.50 : 673,447.50 = 673,447.50 : x
2. Step 2: Convert to fraction form
   458,086.50/673,447.50 = 673,447.50/x
3. Step 3: Cross multiply
   458,086.50x = 673,447.50 × 673,447.50
4. Step 4: Simplify right side
   458,086.50x = 453,531,535,256.25
5. Step 5: Solve for x
   x = 453,531,535,256.25/458,086.50
6. Step 6: Final answer
   x = 990,056.54