Finding the Third Proportional to 256,783 and 572,574.50

Step by Step Solution

1. Step 1: Write the proportion equation
   256,783 : 572,574.50 = 572,574.50 : x
2. Step 2: Convert to fraction form
   256,783/572,574.50 = 572,574.50/x
3. Step 3: Cross multiply
   256,783x = 572,574.50 × 572,574.50
4. Step 4: Simplify right side
   256,783x = 327,841,558,050.25
5. Step 5: Solve for x
   x = 327,841,558,050.25/256,783
6. Step 6: Final answer
   x = 1,276,726.10