Finding the Third Proportional to 295,378.50 and 647,938

Step by Step Solution

1. Step 1: Write the proportion equation
   295,378.50 : 647,938 = 647,938 : x
2. Step 2: Convert to fraction form
   295,378.50/647,938 = 647,938/x
3. Step 3: Cross multiply
   295,378.50x = 647,938 × 647,938
4. Step 4: Simplify right side
   295,378.50x = 419,823,651,844
5. Step 5: Solve for x
   x = 419,823,651,844/295,378.50
6. Step 6: Final answer
   x = 1,421,307.41