Finding the Third Proportional to 156,630 and 333,780

Step by Step Solution

1. Step 1: Write the proportion equation
   156,630 : 333,780 = 333,780 : x
2. Step 2: Convert to fraction form
   156,630/333,780 = 333,780/x
3. Step 3: Cross multiply
   156,630x = 333,780 × 333,780
4. Step 4: Simplify right side
   156,630x = 111,409,088,400
5. Step 5: Solve for x
   x = 111,409,088,400/156,630
6. Step 6: Final answer
   x = 711,288.31