Finding the Third Proportional to 304,454 and 688,604.50

Step by Step Solution

1. Step 1: Write the proportion equation
   304,454 : 688,604.50 = 688,604.50 : x
2. Step 2: Convert to fraction form
   304,454/688,604.50 = 688,604.50/x
3. Step 3: Cross multiply
   304,454x = 688,604.50 × 688,604.50
4. Step 4: Simplify right side
   304,454x = 474,176,157,420.25
5. Step 5: Solve for x
   x = 474,176,157,420.25/304,454
6. Step 6: Final answer
   x = 1,557,464.04