Finding the Third Proportional to 60,642 and 141,639

Step by Step Solution

1. Step 1: Write the proportion equation
   60,642 : 141,639 = 141,639 : x
2. Step 2: Convert to fraction form
   60,642/141,639 = 141,639/x
3. Step 3: Cross multiply
   60,642x = 141,639 × 141,639
4. Step 4: Simplify right side
   60,642x = 20,061,606,321
5. Step 5: Solve for x
   x = 20,061,606,321/60,642
6. Step 6: Final answer
   x = 330,820.33