Finding the Third Proportional to 156,917 and 342,994

Step by Step Solution

1. Step 1: Write the proportion equation
   156,917 : 342,994 = 342,994 : x
2. Step 2: Convert to fraction form
   156,917/342,994 = 342,994/x
3. Step 3: Cross multiply
   156,917x = 342,994 × 342,994
4. Step 4: Simplify right side
   156,917x = 117,644,884,036
5. Step 5: Solve for x
   x = 117,644,884,036/156,917
6. Step 6: Final answer
   x = 749,726.82