Finding the Third Proportional to 156,914 and 342,987

Step by Step Solution

1. Step 1: Write the proportion equation
   156,914 : 342,987 = 342,987 : x
2. Step 2: Convert to fraction form
   156,914/342,987 = 342,987/x
3. Step 3: Cross multiply
   156,914x = 342,987 × 342,987
4. Step 4: Simplify right side
   156,914x = 117,640,082,169
5. Step 5: Solve for x
   x = 117,640,082,169/156,914
6. Step 6: Final answer
   x = 749,710.56