Finding the Third Proportional to 231,720 and 340,061

Step by Step Solution

1. Step 1: Write the proportion equation
   231,720 : 340,061 = 340,061 : x
2. Step 2: Convert to fraction form
   231,720/340,061 = 340,061/x
3. Step 3: Cross multiply
   231,720x = 340,061 × 340,061
4. Step 4: Simplify right side
   231,720x = 115,641,483,721
5. Step 5: Solve for x
   x = 115,641,483,721/231,720
6. Step 6: Final answer
   x = 499,056.98