Finding the Third Proportional to 156,072 and 336,726

Step by Step Solution

1. Step 1: Write the proportion equation
   156,072 : 336,726 = 336,726 : x
2. Step 2: Convert to fraction form
   156,072/336,726 = 336,726/x
3. Step 3: Cross multiply
   156,072x = 336,726 × 336,726
4. Step 4: Simplify right side
   156,072x = 113,384,399,076
5. Step 5: Solve for x
   x = 113,384,399,076/156,072
6. Step 6: Final answer
   x = 726,487.77