Finding the Third Proportional to 200,718 and 435,064

Step by Step Solution

1. Step 1: Write the proportion equation
   200,718 : 435,064 = 435,064 : x
2. Step 2: Convert to fraction form
   200,718/435,064 = 435,064/x
3. Step 3: Cross multiply
   200,718x = 435,064 × 435,064
4. Step 4: Simplify right side
   200,718x = 189,280,684,096
5. Step 5: Solve for x
   x = 189,280,684,096/200,718
6. Step 6: Final answer
   x = 943,017.99