Finding the Third Proportional to 315,709 and 482,959.50

Step by Step Solution

1. Step 1: Write the proportion equation
   315,709 : 482,959.50 = 482,959.50 : x
2. Step 2: Convert to fraction form
   315,709/482,959.50 = 482,959.50/x
3. Step 3: Cross multiply
   315,709x = 482,959.50 × 482,959.50
4. Step 4: Simplify right side
   315,709x = 233,249,878,640.25
5. Step 5: Solve for x
   x = 233,249,878,640.25/315,709
6. Step 6: Final answer
   x = 738,812.89