Finding the Third Proportional to 398,655 and 633,946.50

Step by Step Solution

1. Step 1: Write the proportion equation
   398,655 : 633,946.50 = 633,946.50 : x
2. Step 2: Convert to fraction form
   398,655/633,946.50 = 633,946.50/x
3. Step 3: Cross multiply
   398,655x = 633,946.50 × 633,946.50
4. Step 4: Simplify right side
   398,655x = 401,888,164,862.25
5. Step 5: Solve for x
   x = 401,888,164,862.25/398,655
6. Step 6: Final answer
   x = 1,008,110.18