Finding the Third Proportional to 311,890.50 and 470,934

Step by Step Solution

1. Step 1: Write the proportion equation
   311,890.50 : 470,934 = 470,934 : x
2. Step 2: Convert to fraction form
   311,890.50/470,934 = 470,934/x
3. Step 3: Cross multiply
   311,890.50x = 470,934 × 470,934
4. Step 4: Simplify right side
   311,890.50x = 221,778,832,356
5. Step 5: Solve for x
   x = 221,778,832,356/311,890.50
6. Step 6: Final answer
   x = 711,079.15