Finding the Third Proportional to 28,178 and 60,820

Step by Step Solution

1. Step 1: Write the proportion equation
   28,178 : 60,820 = 60,820 : x
2. Step 2: Convert to fraction form
   28,178/60,820 = 60,820/x
3. Step 3: Cross multiply
   28,178x = 60,820 × 60,820
4. Step 4: Simplify right side
   28,178x = 3,699,072,400
5. Step 5: Solve for x
   x = 3,699,072,400/28,178
6. Step 6: Final answer
   x = 131,275.19