Finding the Third Proportional to 580,553 and 879,587.50

Step by Step Solution

1. Step 1: Write the proportion equation
   580,553 : 879,587.50 = 879,587.50 : x
2. Step 2: Convert to fraction form
   580,553/879,587.50 = 879,587.50/x
3. Step 3: Cross multiply
   580,553x = 879,587.50 × 879,587.50
4. Step 4: Simplify right side
   580,553x = 773,674,170,156.25
5. Step 5: Solve for x
   x = 773,674,170,156.25/580,553
6. Step 6: Final answer
   x = 1,332,650.37