Finding the Third Proportional to 156,920 and 342,998

Step by Step Solution

1. Step 1: Write the proportion equation
   156,920 : 342,998 = 342,998 : x
2. Step 2: Convert to fraction form
   156,920/342,998 = 342,998/x
3. Step 3: Cross multiply
   156,920x = 342,998 × 342,998
4. Step 4: Simplify right side
   156,920x = 117,647,628,004
5. Step 5: Solve for x
   x = 117,647,628,004/156,920
6. Step 6: Final answer
   x = 749,729.98