Finding the Third Proportional to 210,068 and 315,256.50

Step by Step Solution

1. Step 1: Write the proportion equation
   210,068 : 315,256.50 = 315,256.50 : x
2. Step 2: Convert to fraction form
   210,068/315,256.50 = 315,256.50/x
3. Step 3: Cross multiply
   210,068x = 315,256.50 × 315,256.50
4. Step 4: Simplify right side
   210,068x = 99,386,660,792.25
5. Step 5: Solve for x
   x = 99,386,660,792.25/210,068
6. Step 6: Final answer
   x = 473,116.61