Finding the Third Proportional to 215,827.50 and 335,124

Step by Step Solution

1. Step 1: Write the proportion equation
   215,827.50 : 335,124 = 335,124 : x
2. Step 2: Convert to fraction form
   215,827.50/335,124 = 335,124/x
3. Step 3: Cross multiply
   215,827.50x = 335,124 × 335,124
4. Step 4: Simplify right side
   215,827.50x = 112,308,095,376
5. Step 5: Solve for x
   x = 112,308,095,376/215,827.50
6. Step 6: Final answer
   x = 520,360.45