Finding the Third Proportional to 142,896 and 307,200

Step by Step Solution

1. Step 1: Write the proportion equation
   142,896 : 307,200 = 307,200 : x
2. Step 2: Convert to fraction form
   142,896/307,200 = 307,200/x
3. Step 3: Cross multiply
   142,896x = 307,200 × 307,200
4. Step 4: Simplify right side
   142,896x = 94,371,840,000
5. Step 5: Solve for x
   x = 94,371,840,000/142,896
6. Step 6: Final answer
   x = 660,423.24