Finding the Third Proportional to 156,969 and 336,078

Step by Step Solution

1. Step 1: Write the proportion equation
   156,969 : 336,078 = 336,078 : x
2. Step 2: Convert to fraction form
   156,969/336,078 = 336,078/x
3. Step 3: Cross multiply
   156,969x = 336,078 × 336,078
4. Step 4: Simplify right side
   156,969x = 112,948,422,084
5. Step 5: Solve for x
   x = 112,948,422,084/156,969
6. Step 6: Final answer
   x = 719,558.78