Finding the Third Proportional to 406,269 and 865,025.25

Step by Step Solution

1. Step 1: Write the proportion equation
   406,269 : 865,025.25 = 865,025.25 : x
2. Step 2: Convert to fraction form
   406,269/865,025.25 = 865,025.25/x
3. Step 3: Cross multiply
   406,269x = 865,025.25 × 865,025.25
4. Step 4: Simplify right side
   406,269x = 748,268,683,137.56
5. Step 5: Solve for x
   x = 748,268,683,137.56/406,269
6. Step 6: Final answer
   x = 1,841,806.00