Finding the Third Proportional to 359,052 and 557,538

Step by Step Solution

1. Step 1: Write the proportion equation
   359,052 : 557,538 = 557,538 : x
2. Step 2: Convert to fraction form
   359,052/557,538 = 557,538/x
3. Step 3: Cross multiply
   359,052x = 557,538 × 557,538
4. Step 4: Simplify right side
   359,052x = 310,848,621,444
5. Step 5: Solve for x
   x = 310,848,621,444/359,052
6. Step 6: Final answer
   x = 865,748.20