Finding the Third Proportional to 418,251 and 631,300.50

Step by Step Solution

1. Step 1: Write the proportion equation
   418,251 : 631,300.50 = 631,300.50 : x
2. Step 2: Convert to fraction form
   418,251/631,300.50 = 631,300.50/x
3. Step 3: Cross multiply
   418,251x = 631,300.50 × 631,300.50
4. Step 4: Simplify right side
   418,251x = 398,540,321,300.25
5. Step 5: Solve for x
   x = 398,540,321,300.25/418,251
6. Step 6: Final answer
   x = 952,873.56