Finding the Third Proportional to 332,467.50 and 688,584

Step by Step Solution

1. Step 1: Write the proportion equation
   332,467.50 : 688,584 = 688,584 : x
2. Step 2: Convert to fraction form
   332,467.50/688,584 = 688,584/x
3. Step 3: Cross multiply
   332,467.50x = 688,584 × 688,584
4. Step 4: Simplify right side
   332,467.50x = 474,147,925,056
5. Step 5: Solve for x
   x = 474,147,925,056/332,467.50
6. Step 6: Final answer
   x = 1,426,148.20