Finding the Third Proportional to 215,751 and 334,986

Step by Step Solution

1. Step 1: Write the proportion equation
   215,751 : 334,986 = 334,986 : x
2. Step 2: Convert to fraction form
   215,751/334,986 = 334,986/x
3. Step 3: Cross multiply
   215,751x = 334,986 × 334,986
4. Step 4: Simplify right side
   215,751x = 112,215,620,196
5. Step 5: Solve for x
   x = 112,215,620,196/215,751
6. Step 6: Final answer
   x = 520,116.34