Finding the Third Proportional to 307,695 and 664,597.50

Step by Step Solution

1. Step 1: Write the proportion equation
   307,695 : 664,597.50 = 664,597.50 : x
2. Step 2: Convert to fraction form
   307,695/664,597.50 = 664,597.50/x
3. Step 3: Cross multiply
   307,695x = 664,597.50 × 664,597.50
4. Step 4: Simplify right side
   307,695x = 441,689,837,006.25
5. Step 5: Solve for x
   x = 441,689,837,006.25/307,695
6. Step 6: Final answer
   x = 1,435,479.41