Finding the Third Proportional to 138,111 and 300,825

Step by Step Solution

1. Step 1: Write the proportion equation
   138,111 : 300,825 = 300,825 : x
2. Step 2: Convert to fraction form
   138,111/300,825 = 300,825/x
3. Step 3: Cross multiply
   138,111x = 300,825 × 300,825
4. Step 4: Simplify right side
   138,111x = 90,495,680,625
5. Step 5: Solve for x
   x = 90,495,680,625/138,111
6. Step 6: Final answer
   x = 655,238.76