Finding the Third Proportional to 140,003 and 215,316

Step by Step Solution

1. Step 1: Write the proportion equation
   140,003 : 215,316 = 215,316 : x
2. Step 2: Convert to fraction form
   140,003/215,316 = 215,316/x
3. Step 3: Cross multiply
   140,003x = 215,316 × 215,316
4. Step 4: Simplify right side
   140,003x = 46,360,979,856
5. Step 5: Solve for x
   x = 46,360,979,856/140,003
6. Step 6: Final answer
   x = 331,142.76