Finding the Third Proportional to 211,356 and 436,684.50

Step by Step Solution

1. Step 1: Write the proportion equation
   211,356 : 436,684.50 = 436,684.50 : x
2. Step 2: Convert to fraction form
   211,356/436,684.50 = 436,684.50/x
3. Step 3: Cross multiply
   211,356x = 436,684.50 × 436,684.50
4. Step 4: Simplify right side
   211,356x = 190,693,352,540.25
5. Step 5: Solve for x
   x = 190,693,352,540.25/211,356
6. Step 6: Final answer
   x = 902,237.71