Finding the Third Proportional to 70,820 and 154,520

Step by Step Solution

1. Step 1: Write the proportion equation
   70,820 : 154,520 = 154,520 : x
2. Step 2: Convert to fraction form
   70,820/154,520 = 154,520/x
3. Step 3: Cross multiply
   70,820x = 154,520 × 154,520
4. Step 4: Simplify right side
   70,820x = 23,876,430,400
5. Step 5: Solve for x
   x = 23,876,430,400/70,820
6. Step 6: Final answer
   x = 337,142.48