Finding the Third Proportional to 584,428.50 and 874,290

Step by Step Solution

1. Step 1: Write the proportion equation
   584,428.50 : 874,290 = 874,290 : x
2. Step 2: Convert to fraction form
   584,428.50/874,290 = 874,290/x
3. Step 3: Cross multiply
   584,428.50x = 874,290 × 874,290
4. Step 4: Simplify right side
   584,428.50x = 764,383,004,100
5. Step 5: Solve for x
   x = 764,383,004,100/584,428.50
6. Step 6: Final answer
   x = 1,307,915.35