Finding the Third Proportional to 209,256 and 429,528

Step by Step Solution

1. Step 1: Write the proportion equation
   209,256 : 429,528 = 429,528 : x
2. Step 2: Convert to fraction form
   209,256/429,528 = 429,528/x
3. Step 3: Cross multiply
   209,256x = 429,528 × 429,528
4. Step 4: Simplify right side
   209,256x = 184,494,302,784
5. Step 5: Solve for x
   x = 184,494,302,784/209,256
6. Step 6: Final answer
   x = 881,667.92