Finding the Third Proportional to 159,076 and 215,270

Step by Step Solution

1. Step 1: Write the proportion equation
   159,076 : 215,270 = 215,270 : x
2. Step 2: Convert to fraction form
   159,076/215,270 = 215,270/x
3. Step 3: Cross multiply
   159,076x = 215,270 × 215,270
4. Step 4: Simplify right side
   159,076x = 46,341,172,900
5. Step 5: Solve for x
   x = 46,341,172,900/159,076
6. Step 6: Final answer
   x = 291,314.67