Finding the Third Proportional to 803,709 and 1,224,405

Step by Step Solution

1. Step 1: Write the proportion equation
   803,709 : 1,224,405 = 1,224,405 : x
2. Step 2: Convert to fraction form
   803,709/1,224,405 = 1,224,405/x
3. Step 3: Cross multiply
   803,709x = 1,224,405 × 1,224,405
4. Step 4: Simplify right side
   803,709x = 1,499,167,604,025
5. Step 5: Solve for x
   x = 1,499,167,604,025/803,709
6. Step 6: Final answer
   x = 1,865,311.45