Finding the Third Proportional to 146,299.50 and 319,392

Step by Step Solution

1. Step 1: Write the proportion equation
   146,299.50 : 319,392 = 319,392 : x
2. Step 2: Convert to fraction form
   146,299.50/319,392 = 319,392/x
3. Step 3: Cross multiply
   146,299.50x = 319,392 × 319,392
4. Step 4: Simplify right side
   146,299.50x = 102,011,249,664
5. Step 5: Solve for x
   x = 102,011,249,664/146,299.50
6. Step 6: Final answer
   x = 697,276.82