Finding the Third Proportional to 28,722 and 62,778

Step by Step Solution

1. Step 1: Write the proportion equation
   28,722 : 62,778 = 62,778 : x
2. Step 2: Convert to fraction form
   28,722/62,778 = 62,778/x
3. Step 3: Cross multiply
   28,722x = 62,778 × 62,778
4. Step 4: Simplify right side
   28,722x = 3,941,077,284
5. Step 5: Solve for x
   x = 3,941,077,284/28,722
6. Step 6: Final answer
   x = 137,214.58