Finding the Third Proportional to 151,395 and 318,472.50

Step by Step Solution

1. Step 1: Write the proportion equation
   151,395 : 318,472.50 = 318,472.50 : x
2. Step 2: Convert to fraction form
   151,395/318,472.50 = 318,472.50/x
3. Step 3: Cross multiply
   151,395x = 318,472.50 × 318,472.50
4. Step 4: Simplify right side
   151,395x = 101,424,733,256.25
5. Step 5: Solve for x
   x = 101,424,733,256.25/151,395
6. Step 6: Final answer
   x = 669,934.50