Finding the Third Proportional to 215,764 and 337,724

Step by Step Solution

1. Step 1: Write the proportion equation
   215,764 : 337,724 = 337,724 : x
2. Step 2: Convert to fraction form
   215,764/337,724 = 337,724/x
3. Step 3: Cross multiply
   215,764x = 337,724 × 337,724
4. Step 4: Simplify right side
   215,764x = 114,057,500,176
5. Step 5: Solve for x
   x = 114,057,500,176/215,764
6. Step 6: Final answer
   x = 528,621.55