Finding the Third Proportional to 302,778 and 448,304.63

Step by Step Solution

1. Step 1: Write the proportion equation
   302,778 : 448,304.63 = 448,304.63 : x
2. Step 2: Convert to fraction form
   302,778/448,304.63 = 448,304.63/x
3. Step 3: Cross multiply
   302,778x = 448,304.63 × 448,304.63
4. Step 4: Simplify right side
   302,778x = 200,977,036,796.39
5. Step 5: Solve for x
   x = 200,977,036,796.39/302,778
6. Step 6: Final answer
   x = 663,776.88