Finding the Third Proportional to 156,789 and 343,601

Step by Step Solution

1. Step 1: Write the proportion equation
   156,789 : 343,601 = 343,601 : x
2. Step 2: Convert to fraction form
   156,789/343,601 = 343,601/x
3. Step 3: Cross multiply
   156,789x = 343,601 × 343,601
4. Step 4: Simplify right side
   156,789x = 118,061,647,201
5. Step 5: Solve for x
   x = 118,061,647,201/156,789
6. Step 6: Final answer
   x = 752,997.00