Finding the Third Proportional to 358,956.56 and 555,742.69

Step by Step Solution

1. Step 1: Write the proportion equation
   358,956.56 : 555,742.69 = 555,742.69 : x
2. Step 2: Convert to fraction form
   358,956.56/555,742.69 = 555,742.69/x
3. Step 3: Cross multiply
   358,956.56x = 555,742.69 × 555,742.69
4. Step 4: Simplify right side
   358,956.56x = 308,849,934,709.72
5. Step 5: Solve for x
   x = 308,849,934,709.72/358,956.56
6. Step 6: Final answer
   x = 860,410.33