Finding the Third Proportional to 28,680 and 60,672

Step by Step Solution

1. Step 1: Write the proportion equation
   28,680 : 60,672 = 60,672 : x
2. Step 2: Convert to fraction form
   28,680/60,672 = 60,672/x
3. Step 3: Cross multiply
   28,680x = 60,672 × 60,672
4. Step 4: Simplify right side
   28,680x = 3,681,091,584
5. Step 5: Solve for x
   x = 3,681,091,584/28,680
6. Step 6: Final answer
   x = 128,350.47