Finding the Third Proportional to 576,453 and 821,167.50

Step by Step Solution

1. Step 1: Write the proportion equation
   576,453 : 821,167.50 = 821,167.50 : x
2. Step 2: Convert to fraction form
   576,453/821,167.50 = 821,167.50/x
3. Step 3: Cross multiply
   576,453x = 821,167.50 × 821,167.50
4. Step 4: Simplify right side
   576,453x = 674,316,063,056.25
5. Step 5: Solve for x
   x = 674,316,063,056.25/576,453
6. Step 6: Final answer
   x = 1,169,767.64