Finding the Third Proportional to 146,018.25 and 316,822.50

Step by Step Solution

1. Step 1: Write the proportion equation
   146,018.25 : 316,822.50 = 316,822.50 : x
2. Step 2: Convert to fraction form
   146,018.25/316,822.50 = 316,822.50/x
3. Step 3: Cross multiply
   146,018.25x = 316,822.50 × 316,822.50
4. Step 4: Simplify right side
   146,018.25x = 100,376,496,506.25
5. Step 5: Solve for x
   x = 100,376,496,506.25/146,018.25
6. Step 6: Final answer
   x = 687,424.32