Finding the Third Proportional to 70,678 and 154,300

Step by Step Solution

1. Step 1: Write the proportion equation
   70,678 : 154,300 = 154,300 : x
2. Step 2: Convert to fraction form
   70,678/154,300 = 154,300/x
3. Step 3: Cross multiply
   70,678x = 154,300 × 154,300
4. Step 4: Simplify right side
   70,678x = 23,808,490,000
5. Step 5: Solve for x
   x = 23,808,490,000/70,678
6. Step 6: Final answer
   x = 336,858.57