Finding the Third Proportional to 260,724 and 393,853.50

Step by Step Solution

1. Step 1: Write the proportion equation
   260,724 : 393,853.50 = 393,853.50 : x
2. Step 2: Convert to fraction form
   260,724/393,853.50 = 393,853.50/x
3. Step 3: Cross multiply
   260,724x = 393,853.50 × 393,853.50
4. Step 4: Simplify right side
   260,724x = 155,120,579,462.25
5. Step 5: Solve for x
   x = 155,120,579,462.25/260,724
6. Step 6: Final answer
   x = 594,960.88