Finding the Third Proportional to 156,749 and 342,658

Step by Step Solution

1. Step 1: Write the proportion equation
   156,749 : 342,658 = 342,658 : x
2. Step 2: Convert to fraction form
   156,749/342,658 = 342,658/x
3. Step 3: Cross multiply
   156,749x = 342,658 × 342,658
4. Step 4: Simplify right side
   156,749x = 117,414,504,964
5. Step 5: Solve for x
   x = 117,414,504,964/156,749
6. Step 6: Final answer
   x = 749,060.63