Finding the Third Proportional to 148,150.50 and 319,467

Step by Step Solution

1. Step 1: Write the proportion equation
   148,150.50 : 319,467 = 319,467 : x
2. Step 2: Convert to fraction form
   148,150.50/319,467 = 319,467/x
3. Step 3: Cross multiply
   148,150.50x = 319,467 × 319,467
4. Step 4: Simplify right side
   148,150.50x = 102,059,164,089
5. Step 5: Solve for x
   x = 102,059,164,089/148,150.50
6. Step 6: Final answer
   x = 688,888.42