Finding the Third Proportional to 309,961.69 and 473,834.81

Step by Step Solution

1. Step 1: Write the proportion equation
   309,961.69 : 473,834.81 = 473,834.81 : x
2. Step 2: Convert to fraction form
   309,961.69/473,834.81 = 473,834.81/x
3. Step 3: Cross multiply
   309,961.69x = 473,834.81 × 473,834.81
4. Step 4: Simplify right side
   309,961.69x = 224,519,429,536.91
5. Step 5: Solve for x
   x = 224,519,429,536.91/309,961.69
6. Step 6: Final answer
   x = 724,345.75