Finding the Third Proportional to 142,768.50 and 307,068

Step by Step Solution

1. Step 1: Write the proportion equation
   142,768.50 : 307,068 = 307,068 : x
2. Step 2: Convert to fraction form
   142,768.50/307,068 = 307,068/x
3. Step 3: Cross multiply
   142,768.50x = 307,068 × 307,068
4. Step 4: Simplify right side
   142,768.50x = 94,290,756,624
5. Step 5: Solve for x
   x = 94,290,756,624/142,768.50
6. Step 6: Final answer
   x = 660,445.10