Finding the Third Proportional to 60,443 and 131,639

Step by Step Solution

1. Step 1: Write the proportion equation
   60,443 : 131,639 = 131,639 : x
2. Step 2: Convert to fraction form
   60,443/131,639 = 131,639/x
3. Step 3: Cross multiply
   60,443x = 131,639 × 131,639
4. Step 4: Simplify right side
   60,443x = 17,328,826,321
5. Step 5: Solve for x
   x = 17,328,826,321/60,443
6. Step 6: Final answer
   x = 286,696.99