Finding the Third Proportional to 320,752 and 448,431.50

Step by Step Solution

1. Step 1: Write the proportion equation
   320,752 : 448,431.50 = 448,431.50 : x
2. Step 2: Convert to fraction form
   320,752/448,431.50 = 448,431.50/x
3. Step 3: Cross multiply
   320,752x = 448,431.50 × 448,431.50
4. Step 4: Simplify right side
   320,752x = 201,090,810,192.25
5. Step 5: Solve for x
   x = 201,090,810,192.25/320,752
6. Step 6: Final answer
   x = 626,935.48