Finding the Third Proportional to 320,751 and 448,429.50

Step by Step Solution

1. Step 1: Write the proportion equation
   320,751 : 448,429.50 = 448,429.50 : x
2. Step 2: Convert to fraction form
   320,751/448,429.50 = 448,429.50/x
3. Step 3: Cross multiply
   320,751x = 448,429.50 × 448,429.50
4. Step 4: Simplify right side
   320,751x = 201,089,016,470.25
5. Step 5: Solve for x
   x = 201,089,016,470.25/320,751
6. Step 6: Final answer
   x = 626,931.85