Finding the Third Proportional to 261,360 and 572,521.50

Step by Step Solution

1. Step 1: Write the proportion equation
   261,360 : 572,521.50 = 572,521.50 : x
2. Step 2: Convert to fraction form
   261,360/572,521.50 = 572,521.50/x
3. Step 3: Cross multiply
   261,360x = 572,521.50 × 572,521.50
4. Step 4: Simplify right side
   261,360x = 327,780,867,962.25
5. Step 5: Solve for x
   x = 327,780,867,962.25/261,360
6. Step 6: Final answer
   x = 1,254,135.55