Finding the Third Proportional to 569,856.50 and 879,456

Step by Step Solution

1. Step 1: Write the proportion equation
   569,856.50 : 879,456 = 879,456 : x
2. Step 2: Convert to fraction form
   569,856.50/879,456 = 879,456/x
3. Step 3: Cross multiply
   569,856.50x = 879,456 × 879,456
4. Step 4: Simplify right side
   569,856.50x = 773,442,855,936
5. Step 5: Solve for x
   x = 773,442,855,936/569,856.50
6. Step 6: Final answer
   x = 1,357,258.99