Finding the Third Proportional to 142,732 and 307,390

Step by Step Solution

1. Step 1: Write the proportion equation
   142,732 : 307,390 = 307,390 : x
2. Step 2: Convert to fraction form
   142,732/307,390 = 307,390/x
3. Step 3: Cross multiply
   142,732x = 307,390 × 307,390
4. Step 4: Simplify right side
   142,732x = 94,488,612,100
5. Step 5: Solve for x
   x = 94,488,612,100/142,732
6. Step 6: Final answer
   x = 662,000.20