Finding the Third Proportional to 510,678 and 1,110,861

Step by Step Solution

1. Step 1: Write the proportion equation
   510,678 : 1,110,861 = 1,110,861 : x
2. Step 2: Convert to fraction form
   510,678/1,110,861 = 1,110,861/x
3. Step 3: Cross multiply
   510,678x = 1,110,861 × 1,110,861
4. Step 4: Simplify right side
   510,678x = 1,234,012,161,321
5. Step 5: Solve for x
   x = 1,234,012,161,321/510,678
6. Step 6: Final answer
   x = 2,416,419.27