Finding the Third Proportional to 436.88 and 611.06

Step by Step Solution

1. Step 1: Write the proportion equation
   436.88 : 611.06 = 611.06 : x
2. Step 2: Convert to fraction form
   436.88/611.06 = 611.06/x
3. Step 3: Cross multiply
   436.88x = 611.06 × 611.06
4. Step 4: Simplify right side
   436.88x = 373,397.38
5. Step 5: Solve for x
   x = 373,397.38/436.88
6. Step 6: Final answer
   x = 854.70