Finding the Third Proportional to 215,848.13 and 335,152.69

Step by Step Solution

1. Step 1: Write the proportion equation
   215,848.13 : 335,152.69 = 335,152.69 : x
2. Step 2: Convert to fraction form
   215,848.13/335,152.69 = 335,152.69/x
3. Step 3: Cross multiply
   215,848.13x = 335,152.69 × 335,152.69
4. Step 4: Simplify right side
   215,848.13x = 112,327,323,938.47
5. Step 5: Solve for x
   x = 112,327,323,938.47/215,848.13
6. Step 6: Final answer
   x = 520,399.81