Finding the Third Proportional to 317,439 and 492,068.25

Step by Step Solution

1. Step 1: Write the proportion equation
   317,439 : 492,068.25 = 492,068.25 : x
2. Step 2: Convert to fraction form
   317,439/492,068.25 = 492,068.25/x
3. Step 3: Cross multiply
   317,439x = 492,068.25 × 492,068.25
4. Step 4: Simplify right side
   317,439x = 242,131,162,658.06
5. Step 5: Solve for x
   x = 242,131,162,658.06/317,439
6. Step 6: Final answer
   x = 762,764.38