Finding the Third Proportional to 310,323 and 442,945.50

Step by Step Solution

1. Step 1: Write the proportion equation
   310,323 : 442,945.50 = 442,945.50 : x
2. Step 2: Convert to fraction form
   310,323/442,945.50 = 442,945.50/x
3. Step 3: Cross multiply
   310,323x = 442,945.50 × 442,945.50
4. Step 4: Simplify right side
   310,323x = 196,200,715,970.25
5. Step 5: Solve for x
   x = 196,200,715,970.25/310,323
6. Step 6: Final answer
   x = 632,246.78