Finding the Third Proportional to 310,320 and 442,940.50

Step by Step Solution

1. Step 1: Write the proportion equation
   310,320 : 442,940.50 = 442,940.50 : x
2. Step 2: Convert to fraction form
   310,320/442,940.50 = 442,940.50/x
3. Step 3: Cross multiply
   310,320x = 442,940.50 × 442,940.50
4. Step 4: Simplify right side
   310,320x = 196,196,286,540.25
5. Step 5: Solve for x
   x = 196,196,286,540.25/310,320
6. Step 6: Final answer
   x = 632,238.61