Finding the Third Proportional to 152,210 and 315,028

Step by Step Solution

1. Step 1: Write the proportion equation
   152,210 : 315,028 = 315,028 : x
2. Step 2: Convert to fraction form
   152,210/315,028 = 315,028/x
3. Step 3: Cross multiply
   152,210x = 315,028 × 315,028
4. Step 4: Simplify right side
   152,210x = 99,242,640,784
5. Step 5: Solve for x
   x = 99,242,640,784/152,210
6. Step 6: Final answer
   x = 652,011.31