Finding the Third Proportional to 215,012 and 333,606

Step by Step Solution

1. Step 1: Write the proportion equation
   215,012 : 333,606 = 333,606 : x
2. Step 2: Convert to fraction form
   215,012/333,606 = 333,606/x
3. Step 3: Cross multiply
   215,012x = 333,606 × 333,606
4. Step 4: Simplify right side
   215,012x = 111,292,963,236
5. Step 5: Solve for x
   x = 111,292,963,236/215,012
6. Step 6: Final answer
   x = 517,612.80