Finding the Third Proportional to 142,730 and 307,386

Step by Step Solution

1. Step 1: Write the proportion equation
   142,730 : 307,386 = 307,386 : x
2. Step 2: Convert to fraction form
   142,730/307,386 = 307,386/x
3. Step 3: Cross multiply
   142,730x = 307,386 × 307,386
4. Step 4: Simplify right side
   142,730x = 94,486,152,996
5. Step 5: Solve for x
   x = 94,486,152,996/142,730
6. Step 6: Final answer
   x = 661,992.24