Finding the Third Proportional to 328,677 and 491,708.50

Step by Step Solution

1. Step 1: Write the proportion equation
   328,677 : 491,708.50 = 491,708.50 : x
2. Step 2: Convert to fraction form
   328,677/491,708.50 = 491,708.50/x
3. Step 3: Cross multiply
   328,677x = 491,708.50 × 491,708.50
4. Step 4: Simplify right side
   328,677x = 241,777,248,972.25
5. Step 5: Solve for x
   x = 241,777,248,972.25/328,677
6. Step 6: Final answer
   x = 735,607.45