Finding the Third Proportional to 120,300.75 and 264,521.25

Step by Step Solution

1. Step 1: Write the proportion equation
   120,300.75 : 264,521.25 = 264,521.25 : x
2. Step 2: Convert to fraction form
   120,300.75/264,521.25 = 264,521.25/x
3. Step 3: Cross multiply
   120,300.75x = 264,521.25 × 264,521.25
4. Step 4: Simplify right side
   120,300.75x = 69,971,491,701.56
5. Step 5: Solve for x
   x = 69,971,491,701.56/120,300.75
6. Step 6: Final answer
   x = 581,638.03