Finding the Third Proportional to 138,834 and 300,672

Step by Step Solution

1. Step 1: Write the proportion equation
   138,834 : 300,672 = 300,672 : x
2. Step 2: Convert to fraction form
   138,834/300,672 = 300,672/x
3. Step 3: Cross multiply
   138,834x = 300,672 × 300,672
4. Step 4: Simplify right side
   138,834x = 90,403,651,584
5. Step 5: Solve for x
   x = 90,403,651,584/138,834
6. Step 6: Final answer
   x = 651,163.63