Finding the Third Proportional to 103,166.72 and 217,531.69

Step by Step Solution

1. Step 1: Write the proportion equation
   103,166.72 : 217,531.69 = 217,531.69 : x
2. Step 2: Convert to fraction form
   103,166.72/217,531.69 = 217,531.69/x
3. Step 3: Cross multiply
   103,166.72x = 217,531.69 × 217,531.69
4. Step 4: Simplify right side
   103,166.72x = 47,320,035,066.60
5. Step 5: Solve for x
   x = 47,320,035,066.60/103,166.72
6. Step 6: Final answer
   x = 458,675.39