Finding the Third Proportional to 307,354.50 and 629,883

Step by Step Solution

1. Step 1: Write the proportion equation
   307,354.50 : 629,883 = 629,883 : x
2. Step 2: Convert to fraction form
   307,354.50/629,883 = 629,883/x
3. Step 3: Cross multiply
   307,354.50x = 629,883 × 629,883
4. Step 4: Simplify right side
   307,354.50x = 396,752,593,689
5. Step 5: Solve for x
   x = 396,752,593,689/307,354.50
6. Step 6: Final answer
   x = 1,290,863.14