Finding the Third Proportional to 156,980 and 340,030

Step by Step Solution

1. Step 1: Write the proportion equation
   156,980 : 340,030 = 340,030 : x
2. Step 2: Convert to fraction form
   156,980/340,030 = 340,030/x
3. Step 3: Cross multiply
   156,980x = 340,030 × 340,030
4. Step 4: Simplify right side
   156,980x = 115,620,400,900
5. Step 5: Solve for x
   x = 115,620,400,900/156,980
6. Step 6: Final answer
   x = 736,529.50