Finding the Third Proportional to 103,694 and 213,931

Step by Step Solution

1. Step 1: Write the proportion equation
   103,694 : 213,931 = 213,931 : x
2. Step 2: Convert to fraction form
   103,694/213,931 = 213,931/x
3. Step 3: Cross multiply
   103,694x = 213,931 × 213,931
4. Step 4: Simplify right side
   103,694x = 45,766,472,761
5. Step 5: Solve for x
   x = 45,766,472,761/103,694
6. Step 6: Final answer
   x = 441,360.86