Finding the Third Proportional to 200,277 and 428,984

Step by Step Solution

1. Step 1: Write the proportion equation
   200,277 : 428,984 = 428,984 : x
2. Step 2: Convert to fraction form
   200,277/428,984 = 428,984/x
3. Step 3: Cross multiply
   200,277x = 428,984 × 428,984
4. Step 4: Simplify right side
   200,277x = 184,027,272,256
5. Step 5: Solve for x
   x = 184,027,272,256/200,277
6. Step 6: Final answer
   x = 918,863.74