Finding the Third Proportional to 156,761 and 342,970

Step by Step Solution

1. Step 1: Write the proportion equation
   156,761 : 342,970 = 342,970 : x
2. Step 2: Convert to fraction form
   156,761/342,970 = 342,970/x
3. Step 3: Cross multiply
   156,761x = 342,970 × 342,970
4. Step 4: Simplify right side
   156,761x = 117,628,420,900
5. Step 5: Solve for x
   x = 117,628,420,900/156,761
6. Step 6: Final answer
   x = 750,367.89