Finding the Third Proportional to 311,175 and 633,763.50

Step by Step Solution

1. Step 1: Write the proportion equation
   311,175 : 633,763.50 = 633,763.50 : x
2. Step 2: Convert to fraction form
   311,175/633,763.50 = 633,763.50/x
3. Step 3: Cross multiply
   311,175x = 633,763.50 × 633,763.50
4. Step 4: Simplify right side
   311,175x = 401,656,173,932.25
5. Step 5: Solve for x
   x = 401,656,173,932.25/311,175
6. Step 6: Final answer
   x = 1,290,772.63