Finding the Third Proportional to 545,238 and 827,668.50

Step by Step Solution

1. Step 1: Write the proportion equation
   545,238 : 827,668.50 = 827,668.50 : x
2. Step 2: Convert to fraction form
   545,238/827,668.50 = 827,668.50/x
3. Step 3: Cross multiply
   545,238x = 827,668.50 × 827,668.50
4. Step 4: Simplify right side
   545,238x = 685,035,145,892.25
5. Step 5: Solve for x
   x = 685,035,145,892.25/545,238
6. Step 6: Final answer
   x = 1,256,396.56