Finding the Third Proportional to 138,602 and 300,514

Step by Step Solution

1. Step 1: Write the proportion equation
   138,602 : 300,514 = 300,514 : x
2. Step 2: Convert to fraction form
   138,602/300,514 = 300,514/x
3. Step 3: Cross multiply
   138,602x = 300,514 × 300,514
4. Step 4: Simplify right side
   138,602x = 90,308,664,196
5. Step 5: Solve for x
   x = 90,308,664,196/138,602
6. Step 6: Final answer
   x = 651,568.26