Finding the Third Proportional to 28,680 and 62,868

Step by Step Solution

1. Step 1: Write the proportion equation
   28,680 : 62,868 = 62,868 : x
2. Step 2: Convert to fraction form
   28,680/62,868 = 62,868/x
3. Step 3: Cross multiply
   28,680x = 62,868 × 62,868
4. Step 4: Simplify right side
   28,680x = 3,952,385,424
5. Step 5: Solve for x
   x = 3,952,385,424/28,680
6. Step 6: Final answer
   x = 137,809.81