Finding the Third Proportional to 28,656 and 62,820

Step by Step Solution

1. Step 1: Write the proportion equation
   28,656 : 62,820 = 62,820 : x
2. Step 2: Convert to fraction form
   28,656/62,820 = 62,820/x
3. Step 3: Cross multiply
   28,656x = 62,820 × 62,820
4. Step 4: Simplify right side
   28,656x = 3,946,352,400
5. Step 5: Solve for x
   x = 3,946,352,400/28,656
6. Step 6: Final answer
   x = 137,714.70