Finding the Third Proportional to 156,564 and 342,666

Step by Step Solution

1. Step 1: Write the proportion equation
   156,564 : 342,666 = 342,666 : x
2. Step 2: Convert to fraction form
   156,564/342,666 = 342,666/x
3. Step 3: Cross multiply
   156,564x = 342,666 × 342,666
4. Step 4: Simplify right side
   156,564x = 117,419,987,556
5. Step 5: Solve for x
   x = 117,419,987,556/156,564
6. Step 6: Final answer
   x = 749,980.76