Finding the Third Proportional to 136,716 and 300,316

Step by Step Solution

1. Step 1: Write the proportion equation
   136,716 : 300,316 = 300,316 : x
2. Step 2: Convert to fraction form
   136,716/300,316 = 300,316/x
3. Step 3: Cross multiply
   136,716x = 300,316 × 300,316
4. Step 4: Simplify right side
   136,716x = 90,189,699,856
5. Step 5: Solve for x
   x = 90,189,699,856/136,716
6. Step 6: Final answer
   x = 659,686.50