Finding the Third Proportional to 153,313 and 336,870

Step by Step Solution

1. Step 1: Write the proportion equation
   153,313 : 336,870 = 336,870 : x
2. Step 2: Convert to fraction form
   153,313/336,870 = 336,870/x
3. Step 3: Cross multiply
   153,313x = 336,870 × 336,870
4. Step 4: Simplify right side
   153,313x = 113,481,396,900
5. Step 5: Solve for x
   x = 113,481,396,900/153,313
6. Step 6: Final answer
   x = 740,194.22